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DMA Operations Guide External SIP Peer
110 Polycom, Inc.
Destination network Host name, FQDN, or network domain label of the SIP
peer, with or without port and URL parameters.
If specified, this value by default replaces the non-user
portion of a URL (after the @ symbol) of the To header
and Request-URI for forwarded messages, and just the
Request-URI for REGISTER messages.
If Type is set to Microsoft, this field is required, is used
for the peer’s domain, and is implicitly added to the
Domain List (if not already there).
Port The SIP signaling port number. Defaults to the standard
UDP/TCP port, 5060. If the peer server is using a
different port number, specify it.
If left blank, the system uses the full RFC 3263
procedure to determine the port via DNS.
Use route header Add a Route header with the peer’s Next hop address
value to the message. Applies to both forwarded
messages and external REGISTER messages.
If not selected, the only valid Request-URI
configurations are those that use the peer's Next hop
address value for the URI host.
Prefix range The dial string prefix(es) assigned to this SIP peer.
Enter a single prefix (44), a range of prefixes (44-47), or
multiple prefixes separated by commas (44,46)
If your dial plan uses the Dial services by prefix dial rule
(in the default dial plan) to route calls to services, all dial
strings beginning with an assigned prefix are forwarded
to this SIP peer for resolution.
Note: For a SIP peer, the dial string must either include
the protocol or consist of only the prefix and user name
(no @domain). For instance, if the SIP peer’s prefix is
123, the dial string for a call to alice@polycom.com
must be one of the following:
sip:123alice@polycom.com
sips:123alice@polycom.com
123alice
If your dial plan instead uses a rule that you create to
apply the Resolve to external SIP peer action, there is
no need to specify a prefix.
Strip prefix If selected, the system strips the prefix when a call that
includes a prefix is routed to this peer.
Table 5-14 Add External SIP Peer dialog box
Field Description