SWG-2016/32 User Manual
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OpenVox Communication Co. ,LTD.
Website: www.openvox.cn
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 Guest Calling
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.
4.3.4 Media
Figure 4-22 Media Settings
Table 4-16
Instruction of Media
Options
Definition
Premature 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