Page 158 of 536
Chapter 17 – Connecting the telephones and attendant console
553-3121-210
Standard 3.0
January 1999
Power Failure Transfer
The NTMW07 Trunk/Line card has a built-in Power Failure Transfer (PFT)
feature, 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, or if this card is disabled.
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 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)
Содержание Meridian Meridian 1
Страница 3: ...553 3121 210 Standard 3 0 January 1999 ...
Страница 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Страница 89: ...Page 70 of 536 Chapter 6 Bracing cabinets against earthquakes 553 3121 210 Standard 3 0 January 1999 ...
Страница 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Страница 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Страница 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Страница 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Страница 139: ...Page 120 of 536 Chapter 13 Installing the circuit cards 553 3121 210 Standard 3 0 January 1999 ...
Страница 157: ...Page 138 of 536 Chapter 15 Installing and connecting SDI and Ethernet ports 553 3121 210 Standard 3 0 January 1999 ...
Страница 175: ...Page 156 of 536 Chapter 16 Starting up and testing the system 553 3121 210 Standard 3 0 January 1999 ...
Страница 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Страница 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Страница 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 455: ...Page 436 of 536 Chapter 24 Changing pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...