DMA OperationsGuide External SIP Peer
116 Polycom, Inc.
Downgrade If selected, and if this peer doesn’t support TLS, the
system can change the Request-URI schema from sips
to sip and route the call to this peer.
If not selected, the system routes a TLS call to this peer
only if this peer supports TLS.
Register externally Some external SIP peers require peers to register with
them as an endpoint does, using a REGISTER
message.
Select this option to enable the External Registration
tab and configure the system to register with this
external peer server, following the rules specified in
RFC 3261.
Domain List If your dial plan uses a rule to apply the Resolve to
external SIP peer action, you can restrict calls to this
peer server to specific domains by adding the
authorized domains to this list.
If this list is empty, all domains can resolve to this peer.
Note: In some circumstances (depending on network
topology and configuration), dialing loops can develop if
you don't restrict peer servers to specific domains.
Add new domain Enter a domain and click Add to add it to the list of
authorized domains.
Authorized domains List of administrative domains, contained in the dial
string, for which calls are routed to this peer server.
Leave this list empty to route any call that matches the
rule to this peer server.
Select a domain and click Remove to remove it from
the list.
Postliminary
Use output format Enables dial string transformations using the To header
and Request-URI option settings below instead of a
customized script.
Note: The system generates a script that implements
the settings made in this section. To see (and perhaps
copy) the generated script, you can temporarily select
Use customized script.
To help you learn how to write your own script, you can
make different settings in this section and see how the
generated script changes.
To header options Specify the format of the To header in messages sent to
this peer.
Table 5-15 Edit External SIP Peer dialog box
Field Description