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Telephony settings
Gigaset N670 IP PRO / ALL UK en / A31008-XXXXX-XXXX-X-XX / settings_telephony.fm / 4/18/19
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Telephony settings
General VoIP settings
This page allows you to make some general settings for the VoIP connections.
¤
Settings
Telephony
VoIP
SIP port
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Enter the SIP port used for VoIP connections.
Range: 1-65535; Default: 5060
Secure SIP port
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Enter the SIP port used for secure VoIP connections (TLS).
Range: 1-65535; Default: 5061
SIP timer T1
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Enter the estimated round trip time of an IP packet between a SIP client and a SIP server (the
time it takes between sending out the request to the point of getting a response).
Default: 500 ms
SIP session timer
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Defines a session expiry interval: If the session isn't refreshed within the interval, the session
is released. Session refresh is started after half of the interval by a re-INVITE message, which
the peer side has to confirm to get the session refreshed.
Values: max. 4 digits, min. 90 sec; Default: 1800 sec
Failed registation retry timer
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Specify after how many seconds the phone should attempt to re-register when the initial
registration has failed.
Values: max. 4 digits, min. 10 sec; Default: 300 sec
Subscription timer
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Defines the expiration time (in seconds) of a subscription. In order to keep subscriptions
effective, subscribers need to refresh subscriptions on a periodic basis.
Default: 1800 s
PRACK
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(Provisional Response Acknowledgement) SIP provisional responses do not have an
acknowledgement system so they are not reliable. The PRACK method guarantees a reliable
and ordered delivery of provisional responses in SIP.
It is only available for the user role
admin
.