Service Parameters/Request Information for PRI
To subscribe to PRI service, certain parameters are required to establish service. The
information provided below identifies the recommended and supported parameters for
PRI service. When ordering PRI service, provide the following service request
information:
Equipment Information
PBX Manufacturer—AltiGen Communications, Inc.
•
CSU/DSU—ADTRAN T1 ACE (recommended) or other CSU/DSU
•
Technical Information for PRI with Voice
Switch Type:
5ESS (recommended)
•
DMS (recommended)
•
NI-2 (recommended)
•
4ESS
•
Framing:
Super Frame (SF)/D4
•
Extended Super Frame (ESF) (recommended)
•
Line Coding:
Alternate Mark Inversion (AMI)
•
B8ZS (recommended)
•
Physical Termination:
RJ-48X or RJ-48C
•
Wire:
4 wires
•
PRI Channel Assignment
D Channels Assignment—24th channel (channel ID 23)
MAXCS can configure any channel in a PRI span to be the D channel. The
Note:
default setting is the last channel. Every span should select a D channel within
the span. Shared D channel (NFAS) or back up D channel is not supported.
Hunting—Most Idle, Least Idle, Ascend, Descend
DNIS Digits—can be 3 to 10 digits
CSU/DSU Requirements
The CSU (channel service unit) is a device used to connect a digital trunk line coming in
from the phone company to the PBX. A CSU can terminate signals, repeat signals, and
respond to loopback commands sent from the central office.
MAXCS ACM 6.5 Administration Manual 469