GSM/3G User Manual
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instead of letting the requester know whether there was a
matching user or peer for their request. This reduces
the ability of an attacker to scan for valid SIP usernames.
This option is set to 'yes' by default.
Authenticate Options
Requests
Enabling this option will authenticate OPTIONS requests
just like INVITE requests are. By default this option is
disabled.
Allow or reject guest calls (default is yes, to allow). If your
gateway is connected to the Internet and you allow guest
calls, you want to check which services you offer everyone
out there, by enabling them in the default context.
Media
Table 4-15 Instruction of Media
Some ISDN links send empty media frames before the call
is in ringing or progress state. The SIP channel will then
send 183 indicating early media which will be empty - thus
users get no ring signal. Setting this to "yes" will stop any
media before we have call progress (meaning the SIP
channel will not send 183 Session Progress for early
media). Default is 'yes'. Also make sure that the SIP peer is
configured with progressinband=never. In order for
'noanswer' applications to work, you need to run the
progress() application in the priority before the app.
Sets type of service for SIP packets
Sets type of service for RTP packets
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