The tests are divided into:
• voice calls
• circuit-switched data calls
• B-channel and D-channel packet data calls, using an external packet handler and an MPH
• ISDN BRI trunk
Voice calls
A voice call can be established between two voice terminals across a network (ISDN or non-
ISDN), between two terminals on the same system, and between two terminals on the same
DSL. Acceptance testing of ISDN BRI voice calls is conducted when testing the following
system features supported by ISDN BRI terminals.
• Call Hold
• Call Waiting
• Call Forward No Answer
• Calling Line Identification Presentation and Restriction
• ISDN BRI National ISDN-1 Conference and Call Join
• Special ISDN BRI Hunting
• ISDN BRI ETSI Conference
• ISDN BRI ETSI Call Forwarding Unconditional
• ISDN BRI National ISDN-1 Call Forward All Calls
Call Hold
Call Hold is used to place an active call on hold to allow answering an incoming call or placing
an outgoing call. After releasing an incoming or an outgoing call, retrieve the call on hold.
Note:
The following test requires the terminal placing the calls on hold to have multiple DN
appearances. Otherwise, this test cannot be performed as written.
Performing a call hold test
1. From an ISDN BRI terminal, dial an ISDN BRI or a non-ISDN BRI terminal and
establish an active call connection.
2. Verify that voice transmission is established by talking with the person at the other
terminal.
Testing ISDN BRI functions
82 ISDN Basic Rate Interface Installation and Commissioning March 2011
To Next Page
Loading...
