Lucent Technologies 8.2 User Manual

Issue 1

April 2000

Screen reference 

756

ISDN trunk group 

Specifies the means used to send the DCS message. This field only appears if the 
Used for DCS field entry is 

 and the Service Type field is anything except 

 or 

. Valid entries are 

 for the traditional DCS feature or 

 for the DCS over ISDN-PRI D-channel feature. 

DCS over D-channel is not supported on trunk groups containing ISDN-BRI 
interfaces.

■

Hop Dgt — The Tandem Hop Limitation and QSIG Additional Network 
Feature Transit Counter (ANF-TC) features provide a counter that reflects 
the number of switches (that is, the number of hops) that a call has gone 
through. The counter increments as a call leaves DEFINITY ECS using 
tandem facilities. Valid values are 

 and 

. One or both of the features can 

be applied to the trunk group depending on the following:

— If you enter 

 and the Group Type field is 

 or the Group 

Type field is 

 and the  Service Type field is 

, the Tandem 

Hop Limitation feature is applied to the trunk group.

— If you enter 

 and you set the Group Type field to 

, set the 

Service Type field to 

, 

, 

, 

, 

, 

or any of the craft-defined services allowed in the field. Set the 
Supplementary Service Protocol field to 

 or 

, then the ANF-TC 

feature is applied to calls on the trunk group.

The above conditions overlap. If the Group Type field is 

, 

the Service Type field is 

, and the Supplementary 

Service Protocol field is 

 or 

, then both the Tandem Hop 

Limitation and ANF-TC features are applied to calls on the 
trunk group.

— If both features are applied to calls on the trunk group, ANF-TC 

takes precedence. In situations where DEFINITY ECS is an 
Incoming or Outgoing Gateway, either feature uses the hop count 
and transit information provided by the other.

This field appears when the UUI Treatment field is shared. Enter the maximum 
number of bytes of user information that the network supports.