Nortel Circuit Card 311 Reference page 938

938 NTAK79 2.0 Mb PRI card
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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.
The Meridian 1 signaling interface consists of the A07 DS-30X signaling
controller. This interface provides an 8 Kbps signaling link via the DS-30X
timeslot zero data bit zero. Messages are 3 bytes in length.
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.
For the E1 interface, the connection to the external digital carrier is provided
by the line interface chip. This device 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.
The E-1 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.
Impedance matching
The line interface provides for the use of either 75 ohms coaxial or 120
ohms twisted pair cable. The impedance is selected by a switch, as shown
in Table 390 "Impedance matching switch selection" (page
Copyright © 2003-2008, Nortel Networks
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PAD
14.0 dB
spare
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
PAD SET 1
Offset
14
15 Unassigned Code
PAD
Idle Code
939).