SERVICE MANUAL AS55X
55Xseries_manual_V3.22 (18-08-15)
www.kuhnt.com
69
5.7.2
Extended (expert mode)
Notice: To view this menu you have to start the AS55X service software in expert
mode by opening the tab “Preferences” in the menu bar.
Protocol option immediate connect simulation
Depending on the PBXs properties, sometimes announcements and tones from the
GSM network during the call-setup are not switched to the calling user. With this
protocol option, the AS55X simulates an active call when the call setup to the GSM
network starts. The PBX will handle the call like an active one and transfer audio to
the caller.
Default value:
Off
Notice: If there is a connection with costs between AS55X and PBX, charges
for this line will occur already during the call-setup phase.
Protocol option supervise connection by sip info
There can be a lot of problems or reasons for a termination during a call. To avoid
that there is a noteless break in the IP connection you can use this supervise function.
If a SIP call is in active mode, the AS55X can actively supervise the connection via SIP
reINVITE requests or SIP INFO messages. So every 60 seconds a message will be sent
by the AS55X and the opposition will answer. If there is no reply, the AS55X will
assume that there is a termination and will release all connection parameter. The
connection will be aborted exactly after one minute.
This is recommended in all cases. If it does not work, try change between SIP INFO
and SIP reINVITE. If both methods are not supported by the PBX, you have to switch
off this supervision.
Default value:
… by reINVITE
Incomplete SIP INVITE handling
Standard SIP does not know procedures like overlap sending/receiving in ISDN, but
there are some efforts, to implement such functions.
If the incomplete SIP INVITE handling is off, every received INVITE will be interpreted
as complete, this is the normal case. With all other settings, an INVITE is detected as
complete, if either the amount of digits for autostart is included or the timeout for
autostart has expired or the dialled number matches an entry of the individual call-
setup list under wired access. The handling of the other cases can be set here.
o
Keep INVITE unanswered:
No response is made to an incomplete INVITE.
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