© 2007 cisco systems, inc. all rights reserved.cisco public 1 design clinic: cisco uc architecture...
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© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1
Design Clinic:Cisco UC Architecture for Corporate Branch Offices
Tim Wellborn – CCIE #15397
May 7, 2008
© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 2
Point of this Session:Two solutions – Same destination
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Customer Scenario
“Standalone” Approach
“Centralized” Approach
Summary
Agenda
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Primary Focus
Voice (Call Control)
Voicemail
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Customer Scenario Branch Offices
“X” number of sites – might acquire 10 more
12 – 75 people each
Couple just 2 users
Fax or two, some analog trunks, larger sites have PRI
Corporate IT/Telecom (help) manage branch systems
Standardize (features, components)
“4-digit” dialing
Lower Costs / Reduce Long-Distance
Migration – Slow rollout
Interoperate w/ HQ PBX
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Devil’s in the details
High level requirements can mean more than one thing
Nip “4-digit” dialing now – look to Universal Dial Plan
How standard? Literally one-size fits all or just similar technology?
Willing to adjust WAN/other to support Voice goals?
Interop – define please
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More devilish details
Call ControlSingle PBX? Or networked independent?
VoicemailAll on central? Or each site have own Voicemail?
If each have own – still be able to transfer/forward to central? Between branches?
Network with legacy VM at HQ?
We’ll explore above
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Approach One
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Approach One
Per site Voice and Voicemail
Cisco Unified Communications Manager Express
Cisco Unity Express
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How CUCME/CUE fits criteria
“Buy as you grow”
Leverage H.323 for inter-site calling
Can use variety of ISR sizes – still ‘standardized’
CUE for per-site VM
Remote management by central support team
Use Voice Gateway to connect to HQ PBX
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CUCME/CUE - Step One
• 1861/2800/3800 size to # phones1861 (8) to 3845 (250)
PSTN
BRANCH “A”
• Local phones
• CUE licensed for # mailboxAIM-CUE
NME-CUE
• PSTN trunks Analog VIC
PRI VWIC
FAX
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CUCME/CUE – Add branch
PSTN
BRANCH “A”
• Configure dial-peers so can call each other
• Separate Voicemail
Voice/DataNetwork
PSTN
BRANCH “B”
CUCME/CUE CUCME/CUE
FAXFAX
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CUCME/CUE – Add HQ
PSTN
BRANCH “A”
• More dial-peers
• Still separate VM
Voice/DataNetwork
PSTN
BRANCH “B”
V
Voice Gateway
WAN router
HEADQUARTERS
Voice
CUCME/CUE CUCME/CUE
FAXFAX
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Directory Gatekeeper - Network Scaling
Small Network - Gateways only
Medium Network - Multiple GatekeepersMedium-Large Network - Multiple
Gatekeepers and a Directory Gatekeeper
Small Network - simplified with a Gatekeeper
Gateway Gatekeeper Directory Gatekeeper
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H.323 With RAS
Registration, Admission and Status
Gatekeeper
CUCME A System B
Address Translation: Every GW needs to know only about the GK, not about all other GWs
IP QoS Network
H.225 (Q.931) Call Setup (TCP)
RTP (UDP)
H.245 Call Control (TCP)
H.225
RAS (UDP)
H.225 RAS (UDP)
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Fancy Stuff
Voice Networking Make dialplan manageable Provide redundancy to dialplan component
SOLUTION: Cisco Gatekeeper
Voicemail Networking Network CUE systems Network w/ central Avaya
SOLUTION: Cisco Unified Messaging Gateway
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Cisco Unified Messaging Gateway
Hub in a unified messaging network, centralizes message routing and rules
Supports all Cisco Unified Messaging solutions Enables scaling of a unified messaging network as required by branch
offices or enterprises Simplifies configuration and management tasks Helps customers migrate from legacy voicemail systems to Cisco Unified
Communications solutions
Messaging Challenges Today
Cisco Unity Connection
CUE with SRST or
CME
CUE with SRST or
CME
CUE with SRST or
CME
CUE with SRST or CME
CUE withSRST or CME
CUE with SRST or
CME
Cisco Unity
Cisco Unified Messaging Gateway Solution
Unified Messaging
Network
Cisco UnityCisco ISR with CUE
Each UMG Scales up to 1,000 CUE’s Central CUE
(Upto 10 sites)CME
UMG
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CUCME/CUE “Final” Solution
PSTN
BRANCH “A”
Voice/DataNetwork
PSTN
BRANCH “B”
V
Voice Gateway
WAN router
HEADQUARTERSUMG
GKVoice
CUCME/CUE CUCME/CUE
• Build Slow
• Dial anyone
• Share VM
• Manage centrally
FAXFAX
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OPTION - CUCME with centralized voicemail
PSTN
BRANCH “A”
Voice/DataNetwork
PSTN
BRANCH “B”
CUCME
WAN router
HEADQUARTERS
Voice
CUCMECUCME
Unityor
UConn
MWI Relay
FAXFAX
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Approach Two
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Approach Two
Cisco’s Centralized Call-processing model
Cisco Unified Communications Manager
Cisco Unity (or Unity Connection)
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How CUCM / Unity (or UConn) fit Criteria
Single PBX
“single” point of mangement
Any call any (unless configured not to)
Simpler dialplan management (dialplan itself still pain)
Single VM for everyone
Easy to integrate voice to 3rd-party PBX, or number of them
More 3rd-party voicemail integrations.
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CUCM/Unity - Step One
• 1861/2800/3800 size to # phones1861 (8) to 3845 (250)
PSTN
BRANCH “A”
• Local phones
• CUCM
• Unity
• PSTN trunks Analog VIC
PRI VWIC
Voice/DataNetwork
FAX
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CUCM/Unity – Add branch
PSTN
BRANCH “A”BRANCH “B”
Voice/DataNetwork
Move/Add/Change to add a site
FAX• Can drop in remote by adding phones
• Add gateway as/when needed
BRANCH “C”
V
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CUCM/Unity – Integrate HQ
PSTN
BRANCH “A”
PSTN
BRANCH “B”
Voice/DataNetwork
FAXFAX
V
Voice Gateway
HEADQUARTERS
Voice
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CUCM/Unity – Build Out HQ
PSTN
BRANCH “A”
PSTN
BRANCH “B”
Voice/DataNetwork
V
Voice Gateway
HEADQUARTERS
FAXFAX
Add phones at HQ
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PSTN
BRANCH “A”
PSTN
BRANCH “B”
Voice/DataNetwork
V
Voice Gateway
HEADQUARTERS
FAXFAX
CUCM/Unity – “Final” Solution
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What about use existing VM only?
Not really possible with CUCMENo SMDI – low chance QSIG (no release transfer)
For CUCM have following options1) Dual connect 3rd-party VM
Box not likely to be set up for dual integration
2) Use QSIG link from CUCM to PBX
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Criteria that immediately drive Centralized True UM
Requires Unity w/ customer’s Exchange or Notes
Does not require centralized CUCM
Company-wide PresenceRequires centralized CUCM w/ CUP
“agents any location” Contact Center Requires centralized CUCM and UCC Express or Enterprise, possibly CVP
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Q and A
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