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Plexus 9000 Planning and Engineering Guide
Planning for Installation
Section 130-200-000
Issue 5, January 24, 2003
Telica, Inc.
6-15
6.1.8 System
Interfaces
6.1.8.1 DS-1
The Plexus 9000 DS-1 interfaces can be provisioned for the following
modes of operation: Primary Rate ISDN, SS7 links/linksets, or as
Inter-Machine Trunks (IMT). Telica recommends that the first DS-1 port
(#1 of 28) on the module, with a user-selected DS-0, in each of the first
two IOM slot positions (chassis slots 1 and 2) be used for SS7 links.
Caution:
ISDN PRIs and SS7 signaling A-Links cannot be on the same
IOM.
CAS and SS7 signaling A-Links cannot be on the same IOM.
The maximum number of primary A-Links on an IOM is 2 and in a system
is 34.
A-Links and Intermachine Trunks
(IMTs) can be on the same IOM.
IMTs and PRIs can co-exist on an IOM.
CAS and PRIs can co-exist on an IOM with a maximum of 140 CAS DS1s
and 84 PRIs.
The DS-1 I/O rear interface modules provide the DS-1 terminations. Each
DS-1 IOM terminates 28 DS-1 channels via two 64-pin connectors (28
pairs for transmit, 28 pairs for receive). Typically, the DS-1 cables
terminate at a DSX-1 cross-connect panel via wire-wrap or 64-pin
connectors. The cable distance to the DSX-1 cross-connect panel cannot
be greater than 655 feet using 22-gauge T1 cable. 24-gauge cable may
also be used for distances up to 400 feet. Refer to
for Telica
part numbers of the cable.
Provisioning information must be provided to create the configuration
database within the Plexus 9000. Information that may be required for
provisioning can be found in the “Planning for Provisioning” section of
this manual. Provisioning procedures are provided in the
Installation and
Operations Manual
. Information about TL1 commands can be found in
the
TL1 Commands Reference Guide
.