Administrator's Guide

Features and technical reference
555-233-5061936 Issue 5 October 2002
One facility can support multiple separate and distinct PRI-endpoints (several
extensions) within a single facility. Non-overlapping contiguous sets of DS0s
(B-channels) are associated with each PE.
Universal digital signal level 1 board
The UDS1 board is the interface for line-side and network facilities carrying
wideband calls.
Non-signaling endpoint applications
Wideband can also support configurations using non-signaling (non-ISDN-PRI)
line-side T1 or E1 facilities. The endpoint applications are the same as those
defined for configurations with signaling.
Data service unit/channel service unit
This unit simply passes the call to the endpoint application. Unlike terminal
adapters, the device service unit (DSU)/channel service unit (CSU) does not have
signaling capability.
NOTE:
No DSU/CSU is needed if the endpoint application has a fractional T1
interface.
Line-side (T1 or E1) facility
This facility, like the ISDN-PRI facility, is composed of a group of DS0s (23 for a
T1 facility and 30 for an E1 facility). Line-side facilities are controlled solely
from the switch. Through the access-endpoint command, a specific DS0 or group
of DS0s is assigned an extension. This individual DS0 or group, along with the
extension, is known as a wideband access endpoint (WAE).
Wideband access endpoint
WAEs have no signaling interface to the switch. These endpoints simply transmit
and receive wideband data when the connection is active.
NOTE:
The switch can determine if the connection is active, but this does not
necessarily mean that data is actually coming across the connection.
A WAE is treated as a single endpoint and can support only one call. If all DS0s
comprising a wideband access endpoint are in service, then the wideband access
endpoint is considered in service. Otherwise, the wideband access endpoint is
considered out of service. If an in-service wideband access endpoint has no active
calls on its DS0s, it is considered idle. Otherwise, the wideband access endpoint is
considered busy.