Polycom DMA 7000 System

DMA OperationsGuide External SIP Peer

104 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.

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