5. Verify the call was forwarded to the attendant by answering the call at the attendant
console. The attendant console will display the call-originating identification number
and the notification of call redirection.
6. Hang up at the call-originating ISDN BRI terminal to release the call connection.
Calling Line Identification Presentation and Restriction
Calling Line Identification Presentation and Restriction allows a calling party number (Calling
Line Identification) to be shown on a called party ISDN BRI terminal display. Use LD 27 to
specify this feature when configuring the TSP for the ISDN BRI terminal DN. See "TSP
configuration procedures" in Avaya ISDN Basic Rate Interface Feature Fundamentals
(NN43001-580).
This feature gives the calling and the called parties the option of displaying the calling line
identification as follows:
• The called party ISDN BRI terminal must have the calling line presentation (CLIP)
parameter value set to YES to accept the calling line identification and show it on its
display.
• If there is an option on the ISDN BRI terminal that enables the calling party to allow or
restrict the presentation of the calling line ID on a per call basis, select the option to allow
presentation. This option on the terminal overrides the PRES parameter values entered
in the TSP data block when configuring the TSP. This depends on the telephone
configuration default. See "TSP configuration procedures" in Avaya ISDN Basic Rate
Interface Feature Fundamentals (NN43001-580).
Perform a Calling Line Identification Presentation test
1. Configure both the calling and the called party ISDN BRI terminal DN with CLIP =
YES and PRES = YES.
2. Place a call from one terminal to the other and observe the display on the called
party ISDN BRI terminal. The Calling Line Identification should be displayed during
ringing and for the duration of the call.
3. Release the call at the called or calling party terminal.
4. Set PRES = NO in the TSP data block for the calling party ISDN BRI terminal. If the
calling party ISDN BRI terminal has an option on the set to allow or restrict the
presentation of the calling party number, select the option to allow presentation and
place a call to another ISDN BRI terminal.
5. Observe the called party ISDN BRI terminal display. You should see the number
being displayed.
6. Release the call connection.
Voice calls
ISDN Basic Rate Interface Installation and Commissioning March 2011 85
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