Lucent Technologies Release 8.2 Manual Do Utilizador

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QSIG 
361
Administration for Network Connectivity
555-233-504 — Issue 1 — April 2000
CID: 77730
B  
Private Networking
QSIG Basic Call Setup
Transit Counter 
(ANF–TC) 
DEFINITY ECS provides QSIG ANF-TC as defined in ISO/IEC 6B032 and 6B033. 
It prevents indefinite looping, connections giving poor transmission performance, and 
inefficient use of network resources.
ANF-TC is invoked automatically for ISDN basic calls and the Route Pattern form 
indicates the number of switches through which a call may be routed.
QSIG Basic Supplementary Services
Called/Busy Name
Enables the calling party to see the name of the called party at the following times:
while the call is ringing at the called party’s terminal. 
while listening to a busy tone because the called party’s terminal was busy. 
Called/Busy Name is similar to the display provided for local on-switch calls, as well 
as for the DCS calls, with the following exceptions:
Names longer than 15 characters are truncated; only the first 15 characters display.
The number does not display unless QSIG VALU is enabled.
QSIG Name and 
Number Identification
QSIG Name and Number Identification allows a switch to send and receive the 
calling number, calling name, connected number, and connected name. QSIG Name 
and Number Identification displays up to 15 characters for the calling and connected 
name and up to 15 digits for the calling and connected number across ISDN 
interfaces.
You can administer outgoing calls as “yes”, “no”, or “restricted.” Restricted means 
that DEFINITY ECS sends the information but sends it “presentation restricted,” 
which indicates to the receiving switch that the information should not be displayed. 
A received restricted number is included on the Call Detail Record (CDR).
Transit switch information
When DEFINITY ECS acts as a transit switch, the QSIG standards require it to pass 
on all supplementary service information that is not addressed to it. This includes 
name information. (A “transit” switch is a switch that routes an incoming call 
administered for Supplementary Services Protocol Bto a trunk also administered for 
Supplementary Services Protocol B.) However, Basic Call Setup and number 
information is subject to modification by the transit switch. This means that trunk 
group administration on a transit switch does not override incoming name 
information, but may override incoming number information (as long as this does not 
lower the restriction on the information).
Example
If a non-restricted calling name and number are received by a DEFINITY ECS acting 
as a transit switch, and if the outgoing trunk is administered for presentation restricted 
for both name and number, the number is passed on as “restricted” and name is 
passed on as “unrestricted.”