iAG801 Series Analog Gateway User Manual
38
OpenVox Communication Co. ,LTD.
URL: www.openvox.cn
4.4.6 Security and Media
Table 4-4-5 Instruction of Security and Media
Options
Definition
Match Auth Username
If available, use the user name field of the authentication line to match
instead of using the user name of the user name field.
Realm
For authentication domains, all domains must be globally unique according
to the RFC3261 standard. Generally can be set to host name or domain
name.
Use Domain as Realm
Use the SIP domain as the boundary of the domain.
Always Auth Reject
When an "INVITE" or "REGISTER" request is rejected for any reason, the
same reason will always be used. The username is legal but the password is
incorrect. It does not tell the requester whether there is this "user" or
"peer", which reduces the possibility of an attacker scanning the SIP
account (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 customer calls (enabled by default, allowed). If your gateway
is connected to an external network and allows customers to call, you want
to check which services are provided for everyone and enable it in the
default "context".
Premature Media
Some SDN links will 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 medias 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
