Isdn Tests; Network Loopback - Zhone 100 User Manual

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ISDN Tests

Network Loopback

6-16
ISDN testing features include Network Loopback, User Loopback and Adapter Status
information and Tests.
The ISDN "B" channels may be looped back (toward the Network) for external testing.
Configured for Backup operation
Loopback of a B-Channel is automatically initiated when connection is made to a Dial-
In call, provided the B-Channel is currently configured for Backup operation.
NOTE: In some cases, the Directory # assigned (as entered and displayed on
the ISDN Configuration screen), may not match the actual number to be di-
aled in order to establish a Dial-In connection to the B-Channels. Contact the
Network Control Center or Telephone Service Provider to verify the Dial-In
number if problems are encountered.
The Backup process has priority over loopback, and will automatically clear a B-Chan-
nel loopback and initiate the Backup process if Backup is triggered while a loopback
is established.
Configured for On-Demand operation
The "Call Out/Loop" test feature on the ISDN Status / Test screen initiates a Band-
width On Demand (BOD) call-out and sets a loopback toward the Network at the On-
Demand configured data rate.
NetPath 100 User's Manual - Installation Guide 980-001-0210G
June 1999