Nortel Networks 311

Functional description 179

The Lineside T1 interface offersa number of beneﬁts when used to connect

to third-party applications equipment:

•It is a more cost-effectivealter native forconnection because it eliminates

the need for expensivechannel bank equipment.

•The Lineside T1 supports powerful T1 monitoring and diagnostic

capability.

•Overallcosts 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 ter minal equipmentis 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 improvementover 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 achievethe lineside functionality was

to use analog ports and channel bank equipment. With the Lineside T1

interface, a direct connection is provided between theMer idian 1 and the

peripheral equipment. No channel bank equipment is required, resulting in

a more robust and reliable connection.

The Lineside T1 interface offersa number of beneﬁts when used to connect

a Meridian 1 to third-party applications equipment:

•It is a more cost-effectivealter native forconnection because it eliminates

the need for expensivechannel 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 23May 2008