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Jumpering a New Line

Providing a new line usually involves two jumpers, though some small exchanges may only require an MDF jumper.This page deals with jumpering in a UAX13 but other exchanges will be similar

Before jumpering a new line, in many exchanges it is necessary first to disconnect the NU tone jumpers from the "spare“ line number on the "multiple" side of the IDF.

Rearranging the NU tone jumpers and strapping is usually very tedious.

More modern exchanges have final selectors that can return NU tone should the multiple number be left disconnected. In this case much time is saved.

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In a UAX13, two jumpers have to be provided on the frames to connect up a new line.

1) A two wire MDF jumper between the cable pair serving the line and the protector serving the required multiple number.

2) A three wire jumper is provided on the IDF to connect the multiple number to the required linefinder outlet.

Record cards have to be updated within the exchange.

1) The MDF jumper is recorded on the A606 card which is in number order. Note that the DP cards will also have to be completed so that the full routing is available.

2) The IDF jumper is recorded on the A737 card, which is in number order and the A736 card which is in linefinder bank outlet order.

On the DFR these records are also kept as Excel spreadsheets and so details of changes to the records need to be advised to the Recorder. Prints of the spreadsheets are made available for use in the exchange. The spreadsheets are also available on the telecoms website so that S&T can have up to date access to them.

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Norchard MDF Terminating Record - A606 sheet 1

Circuit MDF Final DP Circuit Details Circuit MDF Final DP Circuit Detailsbar & pr No & pr bar & pr No & pr

500 B159 12/2 500 Peter Adams Wagon 525 B38 3M/1 3N/1 525 St Mary's halt501 B97 07-Jul 501 Shop POS machine 526502 B21 3C/1 502 Café 527 B6 2/1 527 Workshop503 C42 15/2 503 Office 528 B67 2/3 528 Loco Dept Mess504 B36 Y17/Y18 504 Middle Forge Junction 529 B39 Z2 529 Norchard Signal Box505 C18 14/18 505 New Booking Office 530506 B62 2A/6 506 Electrical Group 531 B30 3B/1 531 Hi Level Platform507 532 B127 intl 532 S/O on Power Rack (A2 ord)508 533 B37 3G/6 533 Goatfield509 534510 C43 15/3 510 Office 535 B30 3D/2 535 Bolley's Box511 536512 B79 1/11 512 On wall o/s shop 537513 B25 3C/5 513 C&W Van 538514 B77 1/13 514 Severn & Wye Room 539515 B96 7/6 515 Test line at Shop Master S/Os 540 B20 3B/1 540 Waiting Room516 541517 542518 543 allocated for S&T group519 B5 9/5 519 Museum Office 544520 545521 C41 15/1 521 Office 546 B40 3P/9 546 Lydney Junc Sig Box522 B33 3JH/14 V1 522 Town Crossing & Station 547523 B72 1/20 523 Shop 548 B49 5A/7 548 Norchard Crossing Hut524 549

The A606 is basically a record of the MDF jumpering. It also adds details of the circuit destination.

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Norchard IDF Linefinder Record - A737 sheet 1 issue date 16/08/2011

Circuit Rack Level O/L Type Circuit Rack Level O/L Type Circuit Rack Level O/L Type Circuit Rack Level O/L Type

500 A2 3 7 ord 525 A1 8 8 off site 550 575501 A2 4 4 ord 526 551 A1 8 5 off site 576502 A1 4 3 ord 527 A1 5 10 ord 552 A1 8 6 off site 577503 A1 4 4 ord 528 A1 5 6 ord 553 A2 4 6 578504 A1 8 2 off site 529 A1 5 8 ord 554 579505 A1 3 8 ord 530 555 580506 A1 4 8 ord 531 A2 6 2 ord 556 A2 3 4 ord 581507 532 A2 6 3 ord 557 582508 533 A1 8 3 off site 558 583509 534 559 584510 A1 3 1 ord 535 A1 6 9 ord 560 585 A1 6 6 ord511 536 561 586512 A1 3 5 ord 537 562 587 A1 5 9 ord513 A1 3 4 ord 538 563 588 A2 6 4 ord514 A1 3 6 ord 539 564 589 A1 8 1 off site515 A2 4 2 ord 540 A2 5 2 ord 565 A1 5 10 ord 590 A1 4 10 ord516 541 566 591 A2 3 1 ord517 542 567 592 A2 4 1 ord518 543 568 593 A2 5 3 ord519 A1 3 10 ord 544 569 A1 6 2 ord 594520 545 570 595 Incoming only to PA Control relay set521 A1 4 5 ord 546 A1 8 9 off site 571 596522 A1 8 7 off site 547 572 597 A1 8 10 off site523 A1 5 2 ord 548 A1 4 2 ord 573 598524 549 574 599 Incoming only to Test Number

The A737 describes the IDF jumper connecting the multiple number to the line circuit. This sheet is in numerical order.

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Norchard Linefinder Record - Bank Order - A736 issue date 16/08/2011

Lev 3 Lev 4 Lev 5 Lev 6 Lev 8O/L No. Type O/L No. Type O/L No. Type O/L No. Type O/L No. Type

1 510 ord 1 ord 1 ord 1 ord 1 589 off site2 faulty ord 2 548 ord 2 523 ord 2 569 ord 2 504 off site

Rack A1 3 ord 3 502 ord 3 ord 3 ord 3 533 off site4 513 ord 4 503 ord 4 ord 4 ord 4 *** off site5 512 ord 5 521 ord 5 ord 5 ord 5 551 off site6 514 ord 6 faulty ord 6 528 ord 6 585 ord 6 552 off site7 ord 7 ord 7 ord 7 ord 7 522 off site8 505 ord 8 506 ord 8 529 ord 8 ord 8 525 off site9 ord 9 ord 9 587 ord 9 535 ord 9 546 off site

10 519 ord 10 590 ord 10 527 ord 10 565 ord 10 597 off site

Lev 3 Lev 4 Lev 5 Lev 6 Lev 8O/L No. Type O/L No. Type O/L No. Type O/L No. Type O/L No. Type

1 591 ord 1 ord 1 571 ord 1 ord 1 880 demo2 ord 2 515 ord 2 540 ord 2 531 ord 2 889 demo

Rack A2 3 ord 3 ord 3 ord 3 532 ord 3 888 demo4 556 ord 4 501 ord 4 ord 4 588 ord 4 887 demo5 ord 5 ord 5 ord 5 ord 5 870 demo6 ord 6 553 ord 6 ord 6 ord 6 demo7 500 ord 7 ord 7 ord 7 ord 7 demo8 faulty ord 8 ord 8 ord 8 ord 8 demo9 ord 9 ord 9 ord 9 ord 9 demo

10 890 ord 10 ord 10 ord 10 ord 10 demo

NB off site lines cannot call the 222 fire alarmdemo lines can only call levels 7 and 8

*** faulty P relay coil

The A736 describes the IDF jumper connecting the multiple number to the line circuit. This sheet is in line circuit order.