Nortel-networks Circuit Card Uživatelský manuál stáhnout pdf (Strana 754)

Page 754 of 906 NTAK79 2.0 Mb PRI card

553-3001-211 Standard 3.00 August 2005

Signaling interface

The signaling interface consists of the A07 DS-30X signaling controller. This

interface provides an 8 Kbps signaling link through the DS-30X timeslot zero

data bit zero. Messages are 3 bytes in length.

Carrier interface

The E1 interface connection to the external digital carrier is provided by the

line interface chip. This chip provides accurate pulse shaping to meet the

CCITT pulse mask requirements. It provides clock recovery functions on the

receive side as well as tolerance to jitter and wander in the received bit stream.

10 10.0 dB 10 –10.0 dB

11 11.0 dB 11 spare

12 12.0 dB 12 spare

13 13.0 dB 13 spare

14 14.0 dB 14 Idle Code

15 spare 15 Unassigned Code

Digital pad values and offset allocations (Part 2 of 2)

PAD SET 0 PAD SET 1

Offset PAD Offset PA D

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Nortel-networks Circuit Card Uživatelský manuál Strana 754