Lucent Technologies 8.2 Manuale Utente

Issue 1

April 2000

Screen reference 

753

ISDN trunk group 

Indicates the Bearer Capability Code (BCC) used for the ISDN test call.

Controls the encoding of the Information Transfer Capability (ITC) codepoint of 
the bearer capability IE in the SETUP message when generating an ISDN test call. 
Allowed values are 

 (restricted) and 

 (unrestricted).

ISDN Testcall feature has no routing, so a testcall is never blocked 
due to an incompatible ITC.

Specifies the call-by-call selection for an ISDN test call. Only appears if the 
Service Type field is cbc. Valid entries are all of the services listed in 

‘‘Service 

Type’’ on page 750

, excluding 

 or any new Facility Type of 0 (feature), 1 

(service), or 3 (outgoing) that is defined by users on the Network Specific Facility 
Encoding screen.

The switch performs a trunk hunt when searching for available channels within a 
facility in an ISDN trunk group. Enter 

 to enable a linear trunk hunt search 

from the lowest to highest numbered channels, or 

 for a linear trunk hunt 

search from the highest to lowest numbered channels. With both 

 and 

, all trunks within an ISDN trunk group are selected based on this field 

and without regard to the order in which trunks are administered within the trunk 
group.

Enter 

 to enable a circular trunk hunt based on the sequence the trunks 

were administered within the trunk group. When using ISDN-BRI interfaces, only 

 is allowed.

Voice

Mode 1

Mode 2 Asynchronous

Mode 3 Circuit

Mode 0