Nortel Networks 553-3001-211 manual Osp Cr

NT5D33 and NT5D34 Lineside E1 Interface cards Page 271 of 894

Table 99

Card unit number to E1 channel mapping (Part 3 of 3)

Item	TN	E1 Channel Number
Daughterboard	12	30
Daughterboard	13	31

Disconnect supervision

The LEI supports far-end disconnect supervision by opening the tip side toward the terminal equipment upon the system’s detecting a disconnect signal from the far-end on an established call. The Supervised Analog Line feature (SAL) must be configured in LD 10 for each LEI port. At the prompt FTR respond:

OSP <CR>

Against FTR respond:

ISP <CR>

The LEI treats OSP and ISP for both originating and terminating calls as hook flash disconnect supervision, also known as cut-off disconnect. Originating calls are outgoing from the terminal equipment. Terminating calls are incoming to the terminal equipment. The LEI does not support battery reversal answer and disconnect supervision on originating calls.

After the software is configured, power-up the card and verify the self-test results. The STATUS LED on the faceplate indicates whether or not the LEI has successfully passed its self test, and is, therefore, functional. When the card is installed, this LED remains lit for two to five seconds as the self-test runs. If the self-test completes successfully, the LED flashes three times and remains lit. When the card is configured and enabled in software, the LED goes out. The LED will go out if either the motherboard or daughterboard is enabled by the software. If the LED continually flashes or remains weakly lit, replace the card.

Circuit Card Description and Installation