Nortel Networks Circuit Card - Manual (Page 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
Table 244
Digital pad values and offset allocations (Part 2 of 2)
PAD SET 0 PAD SET 1
Offset PAD Offset PAD