User`s manual

Table Of Contents
Mediant 2000 & TP-1610 & TP-260
SIP User's Manual 158 Document #: LTRT-68805
Table 6-7: SIP Configuration Parameters (continues on pages 150 to 169)
ini File Field Name
Web Parameter Name
Valid Range and Description
EnableHistoryInfo
[Enable History-Info Header]
Enables usage of the History-Info header.
Valid options include:
0 = Disable (default)
1 = Enable
UAC Behavior:
Initial request: The History-Info header is equal to the Request URI. If a
PSTN Redirect number is received, it is added as an additional History-Info
header with an appropriate reason.
Upon receiving the final failure response, the gateway copies the History-
Info as is, adds the reason of the failure response to the last entry, and
concatenates a new destination to it (if an additional request is sent).
The order of the reasons is as follows:
- Q.850 Reason
- SIP Reason
- SIP Response code
Upon receiving the final (success or failure) response, the gateway
searches for a Redirect reason in the History-Info (i.e., 3xx/4xx SIP
Reason). If found, it is passed to ISDN, according to the following table:
SIP Reason Code ISDN Redirecting Reason
302 – Moved Temporarily Call Forward Universal (CFU)
408 – Request Timeout
480 – Temporarily Unavailable
487 – Request Terminated
Call Forward No Answer (CFNA)
486 – Busy Here
600 – Busy Everywhere
Call Forward Busy (CFB)
If history reason is a Q.850 reason, it is translated to the SIP reason
(according to the SIP-ISDN tables) and then to ISDN Redirect reason
according to the table above.
UAS Behavior:
History-Info is sent in the final response only.
Upon receiving a request with History-Info, the UAS checks the policy in
the request. If 'session', 'header', or 'history' policy tag is found, the (final)
response is sent without History-Info. Otherwise, it is copied from the
request.
SIPSubject
[Subject]
Defines the value of the Subject header in outgoing INVITE messages. If not
specified, the Subject header isn’t included (default).
The maximum length of the subject is limited to 50 characters.
MultiPtimeFormat
[Multiple Packetization Time
Format]
Determines whether the 'mptime' attribute is included in the outgoing SDP.
Valid options include:
0 = Disable (default)
1 = Enable (includes the mptime attribute in the outgoing SDP -- PacketCable
defined format)
The 'mptime' attribute enables the gateway to define a separate Packetization
period for each negotiated coder in the SDP. The 'mptime' attribute is only
included if this parameter is enabled, even if the remote side includes it in the
SDP offer.
Upon reception, each coder receives its 'ptime' value in the following
precedence:
1. From 'mptime' attribute.
2. From 'ptime' attribute.
3. Default value.