Lucent Technologies 8.2

DEFINITY ECS Release 8.2

Administrator’s Guide

555-233-506 Issue 1

April 2000

Screen reference

756ISDN trunk group

DCS Signaling

Specifies the means used to send the DCS message. This field only appears if the

Used for DCS field entry is y and the Service Type field is anything except

dmi-mos or sddn. Valid entries are bx.25 for the traditional DCS feature or

d-chan 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 y and n. One or both of the features can

be applied to the trunk group depending on the following:

— If you enter y and the Group Type field is tandem or the Group

Type field is isdn and the Service T ype f ield is tandem, t he Tandem

Hop Limitation feature is applied to the trunk group.

— If you enter y and you set the Group Type field to isdn, set the

Service Type field to access, dmi-mos, public-ntwrk, tandem, tie,

or any of the craft-defined services allowed in the field. Set the

Supplementary Service Protocol field to b or d, then the ANF-TC

feature is applied to calls on the trunk group.

NOTE:

The above conditions overlap. If the Group Type field is isdn,

the Service Type field is tandem, and the Supplementary

Service Protocol field is b or d, 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.

Maximum Size of UUI IE Contents

This field appears when the UUI Treatment field is shared. Enter the maximum

number of bytes of user information that the network supports.