These ports are found on the rear of the Analog Trunk 16 expansion module. They are analog extension ports that can be used in conjunction with analog loop-start trunks during power failure to the IP Office system. See also Emergency and Power Failure Ports.
Any phones connected to these ports should be clearly labeled as power fail extensions in accordance with the appropriate national and local regulatory requirements.
PF |
Pin |
Description |
|
1 |
Not used. |
2 |
Pin 2 is internally connected to pin 5 via a ringer capacitor. |
|
3 |
Not used. |
|
4 |
Ring. |
|
5 |
Tip. |
|
6 |
Pin 6 is internally connected to pin 5 via a ringer capacitor. |
|
7 |
Not used. |
|
8 |
Not used. |
•Minimum Wire Size: AWG 26.
•Maximum Cable Length:
•AWG26: 500m / 1640'.
•AWG24, AWG22: 1000m / 3280'.