Nortel Circuit Card Installation Manual page 754

Page 754 of 906
Table 244
Digital pad values and offset allocations (Part 2 of 2)
PAD SET 0
Offset
10
11
12
13
14
15
Signaling interface
Carrier interface
553-3001-211 Standard 3.00
NTAK79 2.0 Mb PRI card
PAD
10.0 dB
11.0 dB
12.0 dB
13.0 dB
14.0 dB
spare
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.
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.
August 2005
PAD SET 1
Offset
10
11
12
13
14
15 Unassigned Code
PAD
–10.0 dB
spare
spare
spare
Idle Code