Welltech Dialogic SS7 Protocols ISUP User Manual
Page 8
Revision History
8
Issue
Date
Description
8
May 1997
A circuit group may now be ended without having to restart the module. This allows
the application to dynamically configure and end individual circuit groups as required.
The local status of a circuit may now be read. New primitives have been added to
allow enabling and disabling of all maintenance and software events.
New support for Temporary Trunk Blocking procedures (Overload_ind added) and
Charging procedures (Charge_req and Charge_ind added).
New circuit group option for Q.767 formatting of cause parameter.
7
September 1996
Now supports ITU-T 1992 messages and parameters (whilst allowing Blue Book only
operation using a run-time configuration option.
Table of supported parameters added.
Optional support for T34 (segmentation), pass-along messages, and message and
parameter compatibility handling added.
New module option to allow reporting of errors in application messages sent to ISUP.
6
May 1996
Now supports ANSI operation as a run-time configuration option.
Circuit group configuration message parameter definitions changed to allow the
optional use of 24bit point codes.
5
April 1996
Call clearing mechanism modified to require a response from the application in all
cases and to require the application to wait for a Release confirmation from the ISUP
module before commencing a new call.
Use of the most significant bit of the call reference to indicate an outgoing call
removed.
Ability to configure and re-configure all protocol timer values at run-time added.
Additional optional parameters added: Redirection information, Redirection number,
Redirecting Number and Signalling point code.
Optional support for UCIC message and timer T35 added.
Read call request message removed.
This revision of the manual describes the operation of the ISUP protocol module with a
core revision number of V2.00 and later.
4
April 1996
Backward call indicators in ANM sent to ISUP module are now optional and if omitted
ISUP will not insert any default.
Original called number and User service information parameters added to setup
request and setup indication.
Forward transfer message and Call offering message (Italian network only) added.
Support for dual instance of ISUP (ISPF_DUAL) added.
Per-circuit group adjacent module_id’s and instance numbers added to circuit-group
configuration message.
3
August 1995
New messages added: ISP_MSG_STATUS_IND, ISP_MSG_OVLD_REQ,
ISP_MSG_CGSS_IND.
Parameters added to user primitives: access transport, user to user information, user
to user indicators
New user primitive types added: Facility_req, Facility_resp, Facility_ind, Facility_conf,
User_info_req, User_info_ind
Circuit group query added to circuit group supervision control request.
Additional circuit group options defined
2 February
1994
1 September
1993
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