configuring a gsm (3g) modem on a gw2040 series · pdf file2.2 typical uses of the gsm (3g)...

Configuring a GSM (3G) Modem on a GW2040 Series Router

Issue 10.2

Date 05 March 2014

1: About this document

1 About this document ............................................................................... 3 1.1 Scope ..................................................................................................... 3 1.2 Readership ............................................................................................. 3 1.3 More information ................................................................................... 3

1.3.1 Assigned interface number ...................................................................... 3 1.4 Terminology ........................................................................................... 3 1.5 Prerequisites .......................................................................................... 3

1.5.1 Inserting the SIM card ............................................................................ 3 1.5.2 Internet Service Provider details .............................................................. 4

2 Introduction ............................................................................................ 5 2.1 3G overview ........................................................................................... 5 2.2 Typical uses of the GSM (3G) modem ..................................................... 5 2.3 Types of data bearers that the GSM (3G) modem supports .................... 6

2.3.1 GPRS .................................................................................................... 6 2.3.2 HSDPA .................................................................................................. 6 2.3.3 HSUPA .................................................................................................. 6 2.3.4 UMTS ................................................................................................... 6 2.3.5 EDGE .................................................................................................... 6

2.4 PPP layer structure ................................................................................ 7 3 Configuring the GSM (3G) modem ........................................................... 8

3.1.1 Enable the modem interface .................................................................... 8 3.1.2 Configure the GSM (3G) modem APN and behaviour ................................... 8

3.2 Configure the PPP interface ................................................................. 10 3.2.1 Bind the modem-0 to the PPP interface ................................................... 11 3.2.2 Configure the IP settings ....................................................................... 11 3.2.3 Configure address translation ................................................................ 13 3.2.4 Configure IPCP options ......................................................................... 14 3.2.5 Select asynchronous PPP operation ......................................................... 17 3.2.6 Configure PPP authentication ................................................................. 19 3.2.7 Configure LCP options ........................................................................... 23 3.2.8 Configure the default route .................................................................... 27 3.2.9 Save the configuration .......................................................................... 28 3.2.10 Reload the configuration ....................................................................... 29

4 Performing GSM (3G) monitoring and diagnostics ................................ 31 4.1 Connection monitor .............................................................................. 31 4.2 3G info ................................................................................................. 31

4.2.1 3G call history ..................................................................................... 33 4.2.2 Active data connections ........................................................................ 35 4.2.3 Trace analyzer ..................................................................................... 36

Configuring a GSM (3G) Modem on a GW2040 Series Router © Virtual Access Ltd. Issue: 10.2 of 38


1 About this document

1.1 Scope

This configuration guide explains how to set up and configure a primary link using the GSM (3G) modem on a GW2040 Series router.

This document covers firmware version 9.09.xx and firmware version 10.00.xx.

1.2 Readership

This document is for engineers who have previous experience configuring and managing GW Series routers.

1.3 More information

1.3.1 Assigned interface number

Throughout this guide we have used ppp-1 as the assigned interface number. You can configure any PPP interface number for connections. For example, ppp-2 could be substituted for each ppp-1 task covered in this document.

1.4 Terminology

Abbreviation Description APN Access Point Name EDGE Enhanced Data rates for GSM Evolution, sometimes referred to as Enhanced GPRS

(EGPRS) GPRS General Packet Radio Service GSM Global System for Mobile communications HSDPA High-Speed Downlink Packet Access UMTS Universal Mobile Telecommunications System

1.5 Prerequisites

1.5.1 Inserting the SIM card

1. Ensure the unit is powered off.

2. Hold the SIM card with the chip side facing down and the cut corner top left.

3. Gently push the SIM card into SIM slot 1 until it clicks in.

4. To remove the SIM card, gently push the SIM card. The card will click out.

WARNING

The SIM card MUST be inserted into the router before the unit is powered on.

Do not insert or remove the SIM card after the unit has been powered on.



1.5.2 Internet Service Provider details

Before you configure the GSM (3G) modem, check with your Internet Service Provider for the following information:

• Number

• PIN

• PUK, and

• Access Point Name

• Username and password


2: Introduction

2 Introduction

2.1 3G overview

3G is the third generation of mobile phone standards and technology. It is based on the International Telecommunication Union (ITU) family of standards under the International Mobile Telecommunications programme, IMT-2000.

3G technologies enable network operators to offer users a wider range of more advanced services while achieving greater network capacity through improved spectral efficiency. Services include wide-area wireless voice telephony, video calls, and broadband wireless data, all in a mobile environment.

The GW2040 Series router contains a GSM (Global System for Mobile communications) 3G wireless modem. The modem in connection with a SIM card establishes a WAN connection to the Internet.

The GW2040 Series router supports a maximum download speed of 7.2 Mbps and a maximum upload speed of 384 kbps.

2.2 Typical uses of the GSM (3G) modem

You can use the GSM (3G) modem on the GW2040 Series in two ways.

You can create a primary WAN link over the GSM (3G) modem.

Figure 1: A primary WAN link over the 3G modem

You can use the GSM (3G) modem as a backup WAN link. If the primary interface link fails, the GW2040 Series router uses its GSM (3G) modem to automatically route traffic across the Internet via its alternative interface. This set up is not covered in this document. For further information contact Virtual Access.


2: Introduction

Figure 2: A primary link using the 3G modem on the GW2040 series router

2.3 Types of data bearers that the GSM (3G) modem supports

Data bearers are frame protocols that transport data streams.

2.3.1 GPRS

GPRS (General Packet Radio Service) uses packet-switched technology to transmit small bursts of data. The maximum data rate available to the 3G modem depends on provisioning by the network operator.

2.3.2 HSDPA

HSDPA (High-Speed Downlink Packet Access) uses circuit-switched technology to transmit data at speeds of up to 7.2Mbps.

2.3.3 HSUPA

HSUPA (High-Speed Uplink Packet Access) is a 3G mobile telephony protocol with up link speeds of 5.76Mbps.

2.3.4 UMTS

UMTS (Universal Mobile Telecommunications System) is a 3rd generation technology providing higher transfer rates.

2.3.5 EDGE

Edge uses the same frequencies as GPRS but offers better speeds. It is used when the signal strength for 3G is not sufficient. Setting up the GSM (3G) modem for a primary WAN link

To configure the GW2040 Series to use the GSM (3G) modem interface, follow the steps in sections 2.5 to 2.6.8. You do not have to save each configuration until you have updated all your settings. When you have completed all your configuration changes, you must save the configuration as described in section 2.6.9 ‘Save the configuration’.


2: Introduction

2.4 PPP layer structure

The figure below shows the PPP layer structure required to configure a primary WAN link.

Figure 3: PPP layer structure


3: Configuring the GSM (3G) modem

3 Configuring the GSM (3G) modem The GW2040 uses the modem-0 interface for the GSM (3G) card.

3.1.1 Enable the modem interface

If you are using 9.09.xx firmware: in the Expert View menu, select interfaces -> modem-0 -> modem interface. The Modem Interface page appears.

If you are using 10.00.xx firmware: in the Expert View menu, select interfaces > modem > modem-0 > modem interface. The Modem Interface page appears.

Figure 4: The modem interface page in version 9.09.xx

To ensure that modem-0 is enabled, in the Enabled drop-down menu, select yes.

The remaining parameters are not relevant for GSM modems and can be left at their default values.

Field name Description Command line Enabled Specifies if the modem interface is

enabled. Set Enabled to yes.

Set Modem Interface Enabled

Table 1: The modem interface on modem-0 fields, their descriptions and command lines

Click Update. The Configuration Update Result page appears.

3.1.2 Configure the GSM (3G) modem APN and behaviour

On the Start page, click Advanced.

In the Advanced menu, click Expert View.



If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces -> modem-0 -> gsm. The Modem Interface GSM page appears. Click Advanced to view advanced options.

If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces -> modem > modem-0 > gsm. The Modem Interface GSM page appears. Click Advanced to view advanced options.

Figure 5: The modem interface GSM page in version 9.09.xx

Set Access Point Name, PIN, PIN2, PUK, and PUK2 according to your ISP settings. For more information on the dual SIM features, read the guide ‘SIM and SMS Operation on GW2010 and GW2040 Series dual SIM 3G Routers’.

Field name Description Command line APN (Access Point Name)

Defines the Access Point Name as given by network operator for the Main SIM. Enter your service provider’s Access Point Name (APN).

Set Modem Interface Gsm Apn



PIN Defines the GSM Personal Identification Number as assigned by the network operator for the Main SIM. <SIM PIN number>. This may or may not be required, depending on SIM card type. Check with your service provider.

Set Modem Interface Gsm Pin

PIN2 Defines the GSM Personal Identification Number 2 as assigned by the network operator for the Main SIM. <SIM PIN2 number>. This may or may not be required, depending on SIM card type. Check with your service provider.

Set Modem Interface Gsm Pin2

PUK Defines the GSM Personal Unlocking Key as assigned by the network operator. <SIM personal unlock key>. This may or may not be required, depending on SIM card type. Check with your service provider.

Set Modem Interface Gsm Puk

PUK2 Defines the GSM Personal Unlocking Key 2 as assigned by the network operator for the Main SIM. <SIM personal unlock key 2>. This may or may not be required, depending on SIM card type. Check with your service provider.

Set Modem Interface Gsm Puk2

Radio Access Technology Mode

Auto Use best available. GPRS Preferred

Selects GPRS as preferred technology. If not available then will use best available.

UMTS preferred

Selects UMTS as preferred technology. If not available then will use best available.

GPRS only Selects GPRS only UMTS only Selects UMTS only

Set Radio Access to auto.

Set Modem Interface Gsm Rat

Table 2: GSM on modem-0 fields, their descriptions and command lines

Click Update. The Configuration Update Result page appears. You do not have to save your configurations until you have updated all your settings.

3.2 Configure the PPP interface

The GSM (3G) modem uses the modem-0 interface as the lower layer interface, so you must configure a PPP interface to send and receive data using the modem-0 interface. This guide uses ppp-1 but any PPP interface can be used.



3.2.1 Bind the modem-0 to the PPP interface

If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces -> ppp-1-> wan interface. The PPP WAN Interface page appears.

If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces -> ppp > ppp-1 > wan interface. The PPP WAN interface page appears.

Figure 6: The WAN interface page in version 9.09.xx

On the PPP WAN Interface on ppp-1 page, select Modem -0 from the Wan Interface drop-down list.

Field name Description Command line WAN Interface Defines the connection type on the

PPP WAN interface. Ppp Interface Wan Interface

Table 3: The PPP WAN interface field, its description and command line


3.2.2 Configure the IP settings

If you are using version 9.09.xx firmware: to configure the IP interface, in the Expert View menu, select interfaces -> ppp-1-> ip -> ip. The IP Interface page appears.

If you are using version 10.00.xx firmware: to configure the IP interface, in the Expert View menu, select interfaces -> ppp -> ppp-1 -> ip -> ip. The IP Interface page appears.



Figure 7: The IP interface on ppp-1 page in version 9.09.xx

If the GSM link is using a dynamic IP set Enabled to yes, Type to unnumbered, IP Address to 0.0.0.0, and Mask to 255.255.255.0. All other settings can be left at their default values.

If the GSM link is using a static IP set Enabled to yes, and Type to unnumbered. Set the IP address to the static IP, and set the Mask to 255.255.255.255. All other settings can be left at their default values.

Field name Description Command line Enabled Enables or disables IP operation on

the selected interface. Set to yes.

Set Ip Interface Enabled

Type Select one of the following options to define the point to point link associated with the PPP interface as operating in unnumbered IP mode or numbered IP mode. numbered Configures an IP

point to point link for numbered operation. Default.

unnumbered Configures an IP point to point link for numberless or unnumbered operation.

Note: when an interface is defined as unnumbered, the IP Address field for the interfaces(s) must be set to 0.0.0.0. Set to unnumbered.

Set Ip Interface Unnumbered Link Enabled

IP Address Enter the IP address, in dotted decimal notation, to be assigned to the selected interface. This field and the Mask provide the network and host identification. This configuration change does not

Set Ip Interface Address



take effect until the device reboots. Note: When the interface is defined as unnumbered, this field must be set to 0.0.0.0 Set IP Address to 0.0.0.0.

Mask Enter the subnet mask, in dotted decimal notation, to be assigned to the selected interface. The subnet mask is used to determine the network and host ID from the IP address and is based on the network class. Set Mask to 255. 255. 255. 0.

Set Ip Interface Address Mask

Remote IP Address Enter the IP address of the peer at the opposite end of the point to point link associated with the selected interface. The IP router process establishes a host route to the end point of each point to point link based on the remote address. Remote IP Address to 0.0.0.0.

Set Ip Interface Remote Address

Remote Mask Specify the subnetwork mask, in dotted decimal notation, to be associated with the remote end point of an unnumbered IP link. Remote Mask to 255.255.255.0.

Set Ip Interface Remote Mask

MTU Enter the size, in bytes, of the largest IP datagram that can be sent by the selected interface. The MTU value includes the data link header, IP header, and IP data field. Minimum Value

64

Default Value

1500

Maximum Value

1500

Units Bytes Set MTU to 1500.

Set Ip Interface Mtu

Table 4: The IP interface on ppp-1 fields, their descriptions and command lines


3.2.3 Configure address translation

If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces -> ppp-1 -> ip -> address translation -> outgoing. The Outgoing Address Translation page appears.

If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces -> ppp -> ppp-1 -> ip -> address translation -> outgoing. The Outgoing Address Translation page appears.



Figure 8: The outgoing address translation page in version 9.09.xx

Field name Description Command line Enabled Enables or disables the translation of

outgoing IP datagrams on this interface. yes Enables translation of

outgoing IP datagrams on the selected interface.

no Disables translation of outgoing IP datagrams on the selected interface.

Ip Address Translation Interface Enabled

Table 5: The outgoing address translation on ppp-1 field, its description and command line


3.2.4 Configure IPCP options

The IPCP options to be negotiated during PPP negotiation vary depending on the GSM provider. However, we recommend enabling the following options.

• Local IP Address negotiation

• Local Primary DNS negotiation

• Local Secondary DNS negotiation

3.2.4.1 Local IP address negotiation If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces ->ppp-1 ->ip->ipcp options->local address. The Local IP Address Negotiation page appears.

If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces -> ppp -> ppp-1 -> ppp -> ipcp options -> local address. The Local IP Address Negotiation page appears.



Figure 9: The local IP address page in version 9.09.xx

Field name Description Command line Enabled Enables or disables the IP address

negotiation on the local end of the link. Set Enabled to y.

Set Ppp Interface Local Option Ipcp Address Enabled

Required Defines whether or not negotiation of the local IP address is required. Set Required to no.

Set Ppp Interface Local Option Ipcp Address Negotiation Required Enabled

Negotiable Defines whether the IP address value is negotiable or not negotiable. Negotiable to yes.

Ppp Interface Local Option Ipcp Address Negotiable Enabled

IP Address If negotiation is enabled, enter the IP address to use for local IP address negotiation. Enter the IP address in dotted decimal notation. Set IP Address to 0.0.0.0.

Ppp Interface Local Option Ipcp Address Value

Table 6: The local IP address fields, their descriptions and command lines


3.2.4.2 Local primary DNS negotiation If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces ->ppp-1 -> ip -> ipcp options-> local primary dns. The Local Primary DNS page appears.

If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces -> ppp -> ppp-1 -> ppp -> ipcp options -> local primary address. The Local Primary DNS page appears.



Figure 10: The local primary DNS negotiation page in version 9.09.xx

Field name Description Command line Enabled Enables or disables negotiation of the

primary DNS IP address on the local end of the link. Set Enabled to yes.

Set Ppp Interface Local Option Ipcp Primary Dns Address Enabled

Required Defines whether or not negotiation of the primary DNS address is required. Set Required to no.

Set Ppp Interface Local Option Ipcp Primary Dns Address Negotiation Required Enabled

Negotiable Defines whether primary DNS value is negotiable or not negotiable. Negotiable to yes.

Set Ppp Interface Local Option Ipcp Primary Dns Address Negotiable Enabled

IP Address Enter the IP address of the primary DNS server to be used by the local end of the link. Setting the IP address to 0.0.0.0 is an explicit request that the remote end provides the address information. Address to 0.0.0.0.

Set Ppp Interface Local Option Ipcp Primary Dns Address Value

Table 7: The local primary DNS fields, their descriptions and command lines


3.2.4.3 Local secondary DNS negotiation If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces ->ppp-1 ->ip->ipcp options->local secondary dns. The Local Secondary DNS Negotiation page appears.

If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces ->ppp -> ppp-1 ->ppp ->ipcp options ->local secondary dns. The Local Secondary DNS Negotiation page appears.



Figure 11: The local secondary DNS negotiation page in version 9.09.xx

Field name Description Command line Enabled Enables or disables negotiation of the

secondary DNS IP address on the local end of the link. Set Enabled to yes.

Set Ppp Interface Local Option Ipcp Secondary Dns Address Enabled

Required Defines whether or not negotiation of the secondary DNS address is required. Set Required to no.

Set Ppp Interface Local Option Ipcp Secondary Dns Address Negotiation Required Enabled

Negotiable Indicates whether secondary DNS IP address value is negotiable or not negotiable. Negotiable to yes.

Set Ppp Interface Local Option Ipcp Secondary Dns Address Negotiable Enabled

IP Address Enter the IP address of the primary DNS server to be used by the local end of the link. Setting the IP address to 0.0.0.0 is an explicit request that the remote end provides the address information. Set Address to 0.0.0.0.

Set Ppp Interface Local Option Ipcp Secondary Dns Address Value

Figure 12: The secondary DNS fields, their descriptions and command lines


3.2.5 Select asynchronous PPP operation

All PPP interfaces by default are configured for synchronous data transfer. The GSM (3G) modem however uses asynchronous data transfer so you must configure the PPP interface to operate asynchronously.

If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces -> ppp-1 -> ppp -> ppp. The PPP Interface page appears. Click Advanced to view advanced options.



If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces ->ppp -> ppp-1 -> ppp -> ppp. The PPP Interface page appears. Click Advanced to view advanced options.

Figure 13: The PPP interface page in version 9.09.xx

Set Enabled to yes, and set Asychronous Link Enabled to yes. You can leave all other settings at their default values.

Field name Configuration Command line Enabled Enables the ppp-1 interface. Set Ppp Interface Enabled

Maximum Receive Unit (MRU)

The SMG sends the MRU to the end device or peer to inform it that the router can receive larger packets, or to request that the peer send smaller packets. Enter the MRU for the specified PPP interface. Minimum value is 512 bytes. Default/Maximum value is 1524 bytes. Leave as default.

Set Ppp Interface Maximum Receive Unit

Maximum Remote Receive Unit

The peer sends the Maximum Remote Receive Unit (MRRU) to the SMG to inform it that the remote router can receive larger packets, or to request that the peer send smaller packets. Enter the MRRU for the specified PPP interface. Minimum value is 512 bytes. Default/Maximum value is 1524 bytes. Leave as default.

Set Ppp Interface Maximum Remote Receive Unit

Period Authentication Timer

Indicates the length of time, up to 3600 seconds, between successive attempts to authenticate the PPP peer associated with the selected PPP interface. Leave as default.

Set Ppp Interface Periodic Authentication Timer

Maximum Authentication Retries

Indicates the maximum number of authentication retries after the first

Set Ppp Interface Maximum Number Of Authentication



authentication attempt fails. When the maximum number of retries is exceeded, the connection is terminated on the selected PPP interface. The maximum number of retries allowed is 64; the default is 3. Minimum value is 0 and maximum value is 64. Leave as default.

Retries

IP Enabled Enables IP on the interface. Leave as default.

Set Ppp Interface Ip Enabled

Bridging Enabled Enables or disables bridging negotiation and operation on the selected PPP interface. Leave as default.

Set Ppp Interface Stp Enabled

Time to Send LQR Indicates the length of time in seconds to send the LQR. The maximum allowed is 3600 seconds; the default is 0 seconds. Leave as default.

Set Ppp Interface Time To Send Lqr

Send Time Remaining Enabled

Enables or disables the option to send a notice indicating the amount of time remaining for the connection on the selected interface. Leave as default.

Set Ppp Interface Send Time Remaining Enabled

Send Identifier String Enabled

Enables or disables the option to send an identifier string on the selected interface. When this option is enabled, enter the identifier string in the Identifier String field. Leave as default.

Set Ppp Interface Send Identifier String Enabled

Identifier String Used to enter the identifier string when Send Identifier Set String Enabled to yes.

Set Ppp Interface Identifier String

Asynchronous Link Enabled

Enables the interface to communicate in asynchronous mode. Set Asynchronous Link Enabled to yes.

Set Ppp Interface Asynchronous Link Enabled

Primary DNS IP Address

Address of the primary DNS server. Leave as default.

Set Ppp Interface Dns Ip Address

Secondary DNS IP Address

Address of the secondary DNS server. Leave as default.

Set Ppp Interface Secondary Dns Ip Address

Table 8: The PPP Interface fields, their descriptions and command lines


3.2.6 Configure PPP authentication

A username and password is normally required for a data connection via an APN.

3.2.6.1 Configure the username and password If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces -> ppp-1 -> ppp -> authentication -> name and password. The Username and Password page appears.



If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces -> ppp > ppp-1 -> ppp -> authentication -> name and password. The Username and Password page appears.

Figure 14: The username and password page in version 9.09.xx

On the name and password page, set the local username and password for the Main SIM APN.

If you are using a second SIM, to configure the secondary SIM username and password details click Advanced, and set the Secondary SIM Local Username and Password.

Field name Description Command line Local Username Enter an ASCII string for the

authentication user name on the selected PPP interface. This username is used in PAP and CHAP security. Option Description Minimum length 0 Default Value Unspecified Maximum length 63 Units Unspecified

Enter username for APN for Main SIM.

Set Ppp Interface User Name

Local Password Enter an ASCII string for the authentication user password on the selected PPP interface. To ensure security, the password is displayed with asterisks (*) replacing the actual characters. The password is used in PAP and CHAP security. Enter password for APN for Main SIM.

Set Ppp Interface User Encrypted Password

Local Password Confirm

Retype the ASCII string for the authentication user password on the selected PPP interface. Confirm password for APN for Main SIM.

Table 9: The username and password fields, their descriptions and command lines




3.2.6.2 Configure PAP authentication Use the Send PAP Password form to indicate whether or not to send the username and password credentials using Password Authentication Protocol (PAP).

If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces -> ppp-1 -> ppp ->authentication ->send PAP. The Send PAP Password page appears.

If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces -> ppp -> ppp-1 -> ppp ->authentication ->send PAP. The Send PAP Password page appears.

Figure 15: The send PAP password page in version 9.09.xx

On the Send PAP page, set enabled to yes, required to no, and Negotiable to yes.

Field name Description Command line Enabled Enables or disables sending PAP

credentials. Option Description yes Enables sending PAP. No Disables sending PAP.

Set to yes.

Ppp Interface Remote Option Pap Enabled

Required Defines whether PAP authentication is required. Set to no.

Ppp Interface Remote Option Pap Negotiation Required Enabled

Negotiable Defines whether PAP credentials are negotiable Set to yes.

Ppp Interface Remote Option Pap Negotiable Enabled

Table 10: The send PAP password on ppp fields, their descriptions and command lines




3.2.6.3 Configure CHAP authentication The Send CHAP Password form is used to indicate whether or not to send the username and password credentials using Challenge Handshake Authentication Protocol (CHAP).

If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces -> ppp-1 -> ppp ->authentication ->Send CHAP. The Send CHAP Password page appears.

If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces -> ppp > ppp-1 -> ppp->authentication->Send CHAP. The Send CHAP Password page appears.

Figure 16: The send CHAP password page in version 9.09.xx

On the Send CHAP page, set enabled to yes, required to no, and Negotiable to yes.

Field name Description Command line Enabled Enables or disables sending CHAP

credentials. Option Description yes Enables sending CHAP. no Disables sending CHAP.

Set to yes.

Ppp Interface Remote Option Pap Enabled

Required Defines whether CHAP authentication is required. Set to no.

Ppp Interface Remote Option Pap Negotiation Required Enabled

Negotiable Defines whether CHAP credentials are negotiable. Set to yes.

Ppp Interface Remote Option Pap Negotiable Enabled

Table 11: The Send CHAP fields, descriptions and command lines




3.2.7 Configure LCP options

The LCP options to be negotiated during PPP negotiation vary depending on the ADSL service provider. However we recommend enabling the following options.

• Local MRU (Maximum Receive Unit) negotiation;

• Remote MRU negotiation; and

• Remote Magic Number negotiation.

3.2.7.1 Local MRU negotiation The local MRU Negotiation Option negotiates the largest IP datagram that can be received by the router.

If you are using version 9.09.xx firmware: to set local MRU select interfaces -> ppp-1 -> ppp -> lcp options -> local MRU. The Local MRU Negotiation page appears.

If you are using version 10.00.xx firmware: to set local MRU select interfaces -> ppp > ppp-1 -> ppp -> lcp options -> local MRU. The Local MRU Negotiation page appears.

Figure 17: The local MRU negotiation page in version 9.09.xx

Field name Description Command line Enabled Enables or disables local MRU negotiation. PPP Interface Local Option LCP

MRU Enabled

Required Specifies whether the local MRU authentication option must be negotiated during LCP negotiation Select no.

PPP Interface Local Option LCP MRU Negotiation Required Enabled

Negotiable Specifies whether or not the local MRU value is negotiable. Select yes.

PPP Interface Local Option LCP MRU Negotiable Enabled

MRU Defines the MRU value to be sent in the first LCP configure request. Leave as default.

PPP Interface Local Option LCP MRU Value

Table 12: Descriptions of local MRU negotiation fields



Click Update.

3.2.7.2 Remote MRU negotiation The remote MRU Negotiation Option negotiates the largest IP datagram that can be received by the PPP peer.

If you are using version 9.09.xx firmware: to set the remote MRU select interfaces -> ppp-1 > ppp -> ppp -> lcp options -> remote MRU. The Remote MRU Negotiation page appears.

If you are using version 10.00.xx firmware: to set the remote MRU select interfaces -> ppp -> ppp-1 -> ppp -> ppp -> lcp options -> remote MRU. The Remote MRU Negotiation page appears.

Figure 18: The remote MRU negotiation page in version 9.09.xx

Field name Description Command line Enabled Enables or disables MRU negotiation on the

remote end of the link. Select yes.

PPP Interface Remote Option LCP MRU Enabled

Required Specifies whether the remote MRU authentication option must be negotiated during LCP negotiation Select no.

PPP Interface Remote Option LCP MRU Negotiable Enabled

Negotiable Specifies whether or not the remote MRU value is negotiable. Select yes.

PPP Interface Remote Option LCP MRU Negotiation Required Enabled

MRU Defines the MRU option value allowed in configure requests sent by the PPP peer. *This value is only relevant if Negotiable is set to No Leave as default.

PPP Interface Remote Option LCP MRU Value

Table 13: Descriptions of remote MRU negotiation fields

Click Update.



3.2.7.3 Remote LCP magic number negotiation If you are using version 9.09.xx firmware: to enable the remote LCP magic number negotiation, from the ppp-1 folder select ppp -> lcp options -> remote magic number. The Remote LCP Magic Number on ppp-1 page appears.

If you are using version 10.00.xx firmware: to enable the remote LCP magic number negotiation, from the ppp-1 folder select ppp -> lcp options -> remote magic number. The Remote LCP Magic Number on ppp-1 page appears.

Figure 19: The remote LCP magic number page in version 9.09.xx

Field name Description Command Line Enabled Enables or disables the remote LCP Magic

Number on the remote side of the link. Select yes.

PPP Interface Remote Option LCP Magic Number Enabled

Required Specifies whether the remote LCP Magic Number option must be negotiated during LCP negotiation. Select no.

PPP Interface Remote Option LCP Magic Number Negotiation Required Enabled

Negotiable Specifies whether or the remote Magic Number value is negotiable. Select yes.

PPP Interface Remote Option LCP Magic Number Negotiable Enabled

Value Enter a unique eight character hexadecimal value that identifies the link. *This value is only relevant if Negotiable is set to NO. Leave as default.

PPP Interface Remote Option LCP Magic Number Value

Table 14: Remote LCP magic number field descriptions

Click Update.

3.2.7.4 Set call details for the GSM connection If you are using version 9.09.xx firmware: in the Expert View menu, select interfaces -> ppp-1 -> call control -> call. The Call Details page appears.



If you are using version 10.00.xx firmware: in the Expert View menu, select interfaces > ppp -> ppp-1 -> call control -> call. The Call Details page appears.

Figure 20: The call details page in version 9.09.xx

On the Call Details page, enter the number for the GSM (3G) modem to connect to. Normally, *99# is a valid string. Ensure that ‘Permissions’ is set to call.

If the GSM data connection is required to be ‘Always Up’, set Auto Connect Enabled to yes, and the Inactivity Timer to 0.

If the GSM data connection is required to be ‘Dial on Demand’, set Auto Connect Enabled to no, and the Inactivity Timer to the desired disconnect time.

Field name Configuration Command line Outgoing Call Destination Number

Enter the ISP number to call to establish a connection to the Internet. Normally,*99# string is valid. Check with your ISP to confirm.

Set Dial Neighbour Originate Address

Outgoing Call Destination Subaddress

Specifies the device’s subaddress, or extension, if the call destination device has a subaddress defined. No spaces are allowed. Leave as default.

Set Dial Neighbour Originate Subaddress

Incoming Call Remote Number

Specifies the number of one of the locations that is allowed to place calls on this interface. No spaces are allowed. Leave as default.

Set Dial Neighbour Answer Address

Incoming Call Local Number

Specifies the device’s local subaddress, or extension, if the call source has a subaddress defined. No spaces are allowed. Leave as default.

Set Dial Neighbour Received Called Address

ISDN Call Type If using ISDN, defines the call type. Leave as default.

Set Dial Neighbour Call Type

Permissions Assigns the dial permissions Set Dial Neighbour



Set to call. Permission

Auto Connect Enabled

Defines whether to have the GSM connection to be always up or dial on demand. yes Always On. The GSM data

connection will always be re-established when terminated

no Dial on demand. The GSM data connection is brought up only when there is data to send.

Set Dial Neighbour Call Autoconnect

Inactivity Timer Period of inactivity elapsed before the call connection is disconnected (0 to have the call permanently connected).

Set Dial Neighbour Inactivity Timer

Minimum Duration Minimum connection time before the inactivity timer becomes active.

Set Dial Neighbour Minimum Duration

Maximum Duration Maximum time that the connection should be maintained.

Set Dial Neighbour Maximum Duration

Table 15: The call details fields, their descriptions and command lines


3.2.8 Configure the default route

If you are using version 9.09.xx firmware: in the Expert View menu, select system -> ip -> ip routing -> default routes list. The IP Default Routes List page appears.

In the Operation column, click add in the Index 1 row. The IP Default Routes Entry page appears.

If you are using version 10.00.xx firmware: in the Expert View menu, select system -> routing -> default routes list. The IP Default Routes List page appears.

In the Operation column, click add in the Index 1 row. The IP Default Routes Entry page appears.

Figure 21: The IP default routes entry page in version 9.09.xx

Set Configured to yes, Route Type to unnumbered, the Unnumbered Route Next Hop Interface to ppp-1, and the metric to 1.



Field name Description Command line Configured Enables or disables the default

route. Set Configured to yes.

Set Ip Route Default Configured

Route Type Indicates whether the route type is over a numbered or unnumbered link. A numbered link is a link that has been assigned an IP address. Set Route Type to unnumbered.

Ip Route Default Indexed Numbered

Numbered Route Next Hop IP

If you have set Route Type to numbered, enter the IP address, in dotted-decimal notation, of an adjacent router to which to send traffic when a route to a destination is not known by the local device. Leave as default.

Ip Route Default Indexed Next Hop Ip

Unnumbered Route Next Hop Interface

If you have set Route Type to unnumbered, select the interface that provides a connection to the next hop router. Set the Next Hop Interface to one of the options from the drop down list. Set Unnumbered Route Next Hop Interface to ppp-1.

Ip Route Default Indexed Next Hop Interface

Metric Defines the metric for the route. The metric determines the prioriy of the route when multiple default routes are configured. Set Metric to .

Ip Route Default Indexed Metric

Last Resort Specifies that the route is to be used only if all others are down. Usually used with a route that is slow or expensive, or both. Leave as default.

Ip Route Default Indexed Last Resort

Table 16: The IP default route entry page fields, their descriptions and command lines


3.2.9 Save the configuration

In the Configuration Update Result page, click Save to flash.



Figure 22: The configuration update results page

The Save Configuration to Flash page appears.

Figure 23: The save configuration to flash page

In the drop-down menu select the Config you want to save changes to and click Save.

There are 3 options to save to:

• Config 1

• Config 2

• Alternate Config

It is good practice to save to Alternate Config in case your committed configurations are unsuccessful.

If you select a different configuration option to the existing configuration, you will need to change the Boot Config to reload into the correct configuration.

3.2.10 Reload the configuration

In the Expert View menu, select set boot configuration.

In the drop-down menu, select the Config option you have chosen to save to.

Click Select.



Figure 24: The next boot configuration page


4: Performing GSM (3G) monitoring and diagnostics

4 Performing GSM (3G) monitoring and diagnostics The GW2040 Series router supports extensive remote diagnostics, status and device monitoring capabilities.

The status and diagnostics tools are provided as a series of Java applets.

4.1 Connection monitor

To access Monitor, in the Advanced menu, click Connection Monitor.

The GSM (3G) modem interface is shown as MODEM on the Connection Monitor interface. The following sections are not relevant to this router: PPPoE, ATM VC, ISDN, ADSL, Serial.

Figure 25: The connection monitor interface

4.2 3G info

The 3G Info page gives information about the GSM connection and a snapshot of transmit and receive counters

To access 3G Info, in the Status menu, click 3G Info.



Figure 26: The 3G info page

Command line: show modem interface status modem-0



Figure 27: Output from the command line show modem interface status modem-0

4.2.1 3G call history

The 3G Call History page gives a history of GSM (3G) connectivity over a number of days. You can use the zoom facility to view detailed information for any hour during that period including minimum, maximum and average signal strength.

In the Status menu, click 3G Call History. The Call History applet appears.



Figure 28: The 3G info page

Figure 29: The 3G info zoom view

Command line: show line history



Figure 30: Output from the command line show call history

4.2.2 Active data connections

The Active Data Connection page shows the type of connection IP address and data uptime duration.

In the Status menu, click Active Data Connections. The Active Data Connections applet appears.

Figure 31: The active data connections applet

Command line: show active connections



Figure 32: Output from the command line show active connections

4.2.3 Trace analyzer

The Trace Analyzer provides a web interface to event tracing allowing you to quickly locate and analyse problems.

To view the Trace Analyzer, from the web interface Start page, click Advanced.

In the Advanced menu, click Diagnostics.

On the Diagnostics page, click Trace Analyzer. The Trace Analyzer pop-up window appears.

Figure 33: The trace analyzer page

To trace modem events, check Custom Events and then click Select. The Select Events to Trace pop-up window appears.

In the Select Event Classes to Trace dialogue box, add Modem to the list of selected events.



Figure 34: The select event class pop-up window

Click OK.

In the Trace Analyzer window, click Start Trace.

The modem call events display in the Trace Analyzer window.

The figure below shows the type of events that will display when the GSM (3G) modem establishes a link with the ISP.

For a full list of GSM modem events, see Table 17.

Figure 35: The trace analyzer event log

Command Action performed by command ++modem Starts tracing modem events - (minus sign) Stops modem tracing.



Severity Text Description INFO Modem: Dial (<called number>) Outgoing GSM (3G) modem call in

progress to called number. DEBUG Modem: error creating timer Debug messages logged if GSM driver

failed to allocate memory for internal timer.

NOTICE Modem: Dial Failed (outgoing calls not allowed)

Call permissions does not allow dial-out.

NOTICE Modem: Dial Failed (no number configured) No destination number is configured. INFO Modem: Outgoing Call Connected (<speed>) Outgoing GSM connection established. INFO Modem: Disconnected GSM (3G) modem disconnected. INFO Modem: SIM READY SIM status is ready for operation, no

PIN is necessary. INFO Modem: SIM PIN2? SIM is present, but PIN2 is required. INFO Modem: SIM PIN? SIM is present, but PIN is required. INFO MODEM: SIM PUK2? SIM is present, but PUK2 is required. INFO MODEM: SIM PUK? SIM is present, but PUK is required. INFO MODEM: REGISTERED TO NTWK GSM (3G) modem registered to home

network. INFO MODEM: NETWORK NOT FOUND GSM (3G) modem could not find mobile

network. INFO MODEM: SEARCHING FOR NTWK GSM (3G) modem is searching for

mobile network. INFO MODEM: DENIED NTWK REGISTR. GSM (3G) modem has been denied

network registration. INFO MODEM: NTWK STATUS UNKNOWN The status of network registration is

unknown. INFO MODEM: REGISTERED ROAMING GSM (3G) modem registered and is

roaming on one of the networks. INFO MODEM: Code accepted PIN, PIN2, PUK or PUK2 code accepted. INFO MODEM: Code rejected PIN, PIN2, PUK or PUK2 code rejected. INFO MODEM: Attached to GPRS network GSM (3G) modem attached to GPRS

network. INFO MODEM: Connecting GPRS (<APN>) GSM (3G) modem is connecting to

GPRS network. INFO MODEM: Outgoing Call Local Disconnect GSM (3G) connection is terminated

Table 17: A list of GSM modem events


configuring a gsm (3g) modem on a gw2040 series · pdf file2.2 typical uses of the gsm (3g)...

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