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Routing
Gigaset T440 PRO / Gigaset T640 PRO / Admin Guide INT en / A31008-N2003-R103-2-7620 / routes.fm / 6/26/17
Check availability
Enabled: The PABX checks whether a call is possible with SIP, i.e. whether there
is Internet access and the SIP server is available. If yes, the connection is
established over SIP, if not, the PABX tries to establish the connection via
another gateway in the same gateway group (such as an ISDN connection).
Simultaneous
calls
Number of calls which can be made over the gateway at the same time.
Default: 0 = unlimited.
Normally limited in the provider contract.
DTMF mode
DTMF signalling (Dual Tone Multi Frequency) is required for example to poll
and control some network mailboxes and to control automatic information
systems using digit codes. To send DTMF signals over VoIP, you must define
how the key codes are converted to signals and sent.
inband - RTP audio
The DTMF tone is digitalised as a tone sequence and transmitted in the
same way as speech. That means that it is not known which button was
pressed.
info - SIP INFO application/dtmf-relay
The value (= key pressed) is sent as an SIP data packet.
rfc2833 - RTP meta data
The DTMF tone is analysed and its value packed and dispatched in a RTP
packet.
Ask your provider which type of transmission it supports.
From user
User name assigned by the provider. Often the same as the call number
(parameter
User)
, but can be different.
From Domain
Domain name of the provider, almost always identical to
Registrar
. This infor-
mation is available from your provider.
T38 support
T.38 is a protocol for sending faxes over data networks. It has to be enabled for
ISDN connections in order to transmit faxes via the gateway. This protocol
must be supported by the provider.
Update P-Asserted-Identity (CLIP)
(provider-dependent)
no - Deactivated (default)
Use P-Asserted-Identity header
The caller's number is set to PAI. This is advisable particularly for calls
which are forwarded or diverted externally.
The user's outgoing number can also be defined in the gateway group as
PAI. However, the two options should not be used simultaneously.
Update remote party ID (CLIP)
(provider-dependent)
no - Deactivated (default)
When the provider expects the remote party ID in the header:
Use Remote-Party-ID header