Technical data

Dialogic® Diva® SIPcontrol™ Software Configuration
Dialogic
®
Diva
®
SIPcontrol
TM
Software 1.8 Reference Guide page 32
Session Timer
You may configure the parameters shown in the graphic and explained below:
Reply-To format: You can configure this parameter only if you selected e-phone as Peer type in the Edit SIP Peer
Configuration window.
Enter the format that may be necessary for the e-phone server to handle the call. Normally, this
is necessary to omit the 0 (zero) for external calls and to manipulate the address so the e-phone
server is able to call back.
Force T.38
reinvite:
Some peers do not switch the media channel to T.38 if they receive a fax call, e.g., if they do not
evaluate the fax calling tone. If you select this option, the Dialogic
®
Diva
®
SIPcontrol
TM
software
tries to initiate the media channel switch.
Alive check: If you select this option, the failover procedure is expedited because the Diva SIPcontrol software
does not wait for a call time-out if a peer does not respond. To achieve this, the Diva SIPcontrol
software sends "pings" periodically to the peer via OPTIONS requests. If the peer does not send
a valid answer, it will be treated as "inactive" and no calls will be routed to this peer until the peer
responds to the "pings" again. In this case, the Diva SIPcontrol software will automatically direct
calls to this peer again.
Cause code
mapping inbound:
Select the cause code mapping for incoming calls that you configured under C
ause Code Mapping
Configuration as described on page 41.
Cause code
mapping
outbound:
Select the cause code mapping for outgoing calls that you configured under C
ause Code Mapping
Configuration as described on page 41.
Codec profile: Select the codec list that you configured under Codec Configuration
on page 42. If you do not
select a list, an internal default list is used with the following default priority order:
1. G.711A
2. G.711u
3. G.729, if licensed
4. iLBC, if available on the used Dialogic
®
Diva
®
Media Board
5. GSMFR
6. DTMF via RFC2833 (no real codec, but internally handled as codec)
7. T.38, if supported by the used Diva Media Board
In calls from SIP to the PSTN, the first codec of the PSTN device is applied that is also in the
default codec list of the Diva SIPcontrol software.
Maximum
channels:
Specifies the number of channels that this SIP peer is able to handle at the same time. This setting
is used by the Diva SIPcontrol software to distribute calls in a load-balancing scenario and to avoid
speech quality degradation and/or call failures at the peer due to overload conditions.
Use session timer: Activates session monitoring via SIP session timers using the time-out values given here. Refer
to RFC4028 for details.
Interval: If Use session timer is enabled, you may set a time-out in seconds until a call is considered to
be aborted. Refreshes are normally performed after the first half of the interval has elapsed. The
minimum value is 90 seconds. The default value is 600 seconds.
Minimum session
expires:
If Use session timer is enabled, you may set a time in seconds between two session refresh
messages that the Diva SIPcontrol software will accept. The minimum value is 90 seconds.