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Planning for Installation
Plexus 9000 Planning and Engineering Guide
Issue 5, January 24, 2003
Section 130-200-000
6-18 Telica,
Inc.
6.1.8.4
Voice Server Module
Voice Server module (VS), Telica part number 89-0384 or 89-0395,
provides the processing to take voice traffic to/from the TDM network and
transmit/receive packetized voice to the packet/ATM network via the
ANA or PNA module. It has no external interfaces.
Like the ANA and PNA modules, the Voice Server does not have a
corresponding rear module. The rear slot of the corresponding VS module
must contain a blank panel to meet the electromagnetic interference (EMI)
and system-cooling requirements.
6.1.8.5
Primary Rate ISDN (PRI) Interface
The Plexus 9000 supports National ISDN-2 PRI, Lucent 5ESS
â
and
Nortel’s DMS100 interfaces. Each PRI allocates DS-0 channel #24 as the
ISDN D-channel. DS-0 channels 1 to 23 are available as ISDN B-
channels.
6.1.8.6 SS7
Links
The physical interfaces for the SS7 links on the Plexus 9000 chassis are
DS-1 signals. Telica can provide appropriate conversion equipment as
necessary for customers who are not set up for DS-1 format. Two DS-1
I/O modules are used to provide for SS7 redundancy. The SS7 pair
requires four cables with connectors to terminate TX and RX DS1 signals
When selecting the DS-1 SS7 links, Telica recommends that the system
use the first DS-1 port (#1 of 28) on the module, with a user-selected DS0,
in each of the first two IOM module slot positions (chassis slots 1 and 2).
6.1.8.7
InterMachine Trunks (IMTs)
Intermachine trunks are DS-1 or DS3 circuits from another switch. To
provision the point code and trunk group information for IMTs,
terminations must be known.
6.1.8.8
BITS Clock Interface
The Plexus 9000 can have different sources for system timing: external
BITS timing, recovered line timing from IOMs in I/O-1 and I/O-2 or I/O-8
and I/O-10 or internal timing. The timing source is provisioned using a
TL-1 command.