Power Fail Transfer - Nortel Meridian 1 Option 11C Compact Technical Reference Manual

Page 108 of 136

Power Fail Transfer

553-3121-100 Standard 2.0
Chapter 11 — NTMW07 Trunk/Line Card
The NTMW07 Trunk/Line card has a built-in Power Failure Transfer (PFT)
feature, selectable using Jumper J1. It is designed to operate with a loop start
trunk. This feature allows the connecting one trunk on the card to an analog
telephone on the same card in the event of a commercial power or system
failure.
Note: Ground start trunks require a telephone set equipped with a
ground start button to place outgoing calls when in PFT mode.
The Terminal Numbers (TNs) that are equipped to perform the PFT function
vary depending on the slot assignment in the cabinets. When a PFT occurs,
the following are connected:
• In the Main cabinet
— When the NTMW07 card is in slot 1 & 2
TN 01 03 connects to TN 02 03
(Trunk on Card 01 Unit 03 connects to the telephone on Card 02
Unitþ03)
— When the NTMW07 card is in slot 3 & 4
TN 03 03 connects to TN 04 03
(Trunk on Card 03 Unit 03 connects to the telephone on Card 04
Unitþ03)
— When the NTMW07 card is in slot 5 & 6
TN 05 03 connects to TN 06 03
(Trunk on Card 05 Unit 03 connects to the telephone on Card 06
Unit 03)
• In the NTMW08 Expansion cabinet
— When the NTMW07 card is in slot 11 & 12
TN 11 03 connects to TN 12 03
(Trunk on Card 11 Unit 03 connects to the telephone on Card 12
Unit 03)
— When the NTMW07 card is in slot 13 & 14
TN 13 03 connects to TN 14 03
(Trunk on Card 13 Unit 03 connects to the telephone on Card 14
Unit 03)
September 1998