Nortel Networks Circuit Card 311 - Manual (Page 179)

Functional description 179
The Lineside T1 interface offers a number of benefits when used to connect
to third-party applications equipment:
• It is a more cost-effective alternative for connection because it eliminates
the need for expensive channel bank equipment.
• The Lineside T1 supports powerful T1 monitoring and diagnostic
capability.
• Overall costs for customer applications can also be reduced because the
T1-compatible IPE is often more attractively priced than the analog-port
alternatives.
The Lineside T1 card is compatible with all IPE based systems and standard
public or private DSX-1 type carrier facilities. Using A/B robbed bit signaling,
it supports D4 or ESF channel framing formats as well as AMI or B8ZS
coding. Because it uses standard PCM in standard T1 timeslots, existing
T1 test equipment remains compatible for diagnostic and fault isolation
purposes.
The Lineside T1 card is an IPE line card that provides a cost-effective
all-digital connection between T1-compatible terminal equipment (such
as voice mail systems, voice response units, and trading turrets) and
the system. The terminal equipment is assured access to analog
(500/2500-type) telephone type line functionality such as hook flash,
SPRE codes and ringback tones generated from the switch. Usually, the
Lineside T1 card eliminates the need for channel bank type equipment
normally placed between the Meridian 1 and the terminal equipment. This
provides a more robust and reliable end-to-end connection. The Lineside
T1 card supports line supervision features such as loop and ground start
protocols. It can also be used in an off-premise arrangement where analog
(500/2500-type) telephones are extended over T1 with the use of channel
bank equipment.
The Lineside T1 interface offers significant improvement over the previous
alternatives. For example, if a digital trunk connection were used, such
as with the DTI/PRI interface card, lineside functionality would not be
supported. Previously, the only way to achieve the lineside functionality was
to use analog ports and channel bank equipment. With the Lineside T1
interface, a direct connection is provided between the Meridian 1 and the
peripheral equipment. No channel bank equipment is required, resulting in
a more robust and reliable connection.
The Lineside T1 interface offers a number of benefits when used to connect
a Meridian 1 to third-party applications equipment:
• It is a more cost-effective alternative for connection because it eliminates
the need for expensive channel bank equipment.
• The Lineside T1 supports powerful T1 monitoring and diagnostic
capability.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23 May 2008
Copyright © 2003-2008, Nortel Networks
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