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DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506
Issue 1
April 2000
Managing data calls
425Wideband Switching
15
Non-signaling configuration
Wideband also can support configurations using non-signaling (non-ISDN-PRI)
line-side T1 or E1 connections. The endpoints 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 DSU/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 (24 for a
T1 facility and 32 for an E1 facility; both T1 and E1 use 2 channels for signaling
purposes). 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.
Multiple WAEs are separate and distinct within the facility and endpoint
applications must be administered to send and receive the correct data rate over
the correct DS0s. An incoming call at the incorrect data rate is blocked.