The SIP History-Info Header defined in RFC 4244 provides a way of capturing any redirection information that may have occurred on a particular call. Without the SIP History-Info Header the redirecting information would be lost. The SIP History-Info Header is generated when a SIP request is re-targeted and can appear in any SIP request not associated with a dialog. The SIP History-Info header is generated by a User Agent or proxy and is passed from one entity to another through requests and responses. See Related Topics for more info
Feature F-1051 is an addition to what is already supported on the IMG from RFC 4904. The feature ‘Support of Trunk Group Parameters’ gives the IMG the ability to select incoming or outgoing trunk groups and route calls based on the “tgrp” parameters presented in either the R-URI or Contact Header.
SIP Trunk Group Selection-10.5.1
In software 10.5.1 ER1 the CPC (Calling Party Category) Parameter can now be included in either the From: Header or the P-Asserted Identity Header. The fields From: Header and P-Asserted Identity Header were added to the SIP ISUP CPC Mapping object in ClientView. Before software 10.5.1 ER1 only the From: Header could map the CPC parameters between SIP and ISUP and this was accomplished under the 'SIP From Header Tags' object. See Related Topics link below for more information on configuration etc.
Calling Party Category - SS7 ISUP
Feature 1530 gives the IMG the ability to either propagate or not propagate a SIP INVITE Hold message (c=IN IP4 0.0.0.0) to the Outbound SIP INVITE message. For more information see link in Related Topics section below