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Dial Rules Call Server Configuration
Polycom, Inc. 229
If you have special configuration needs and want to modify the dial plan, be
aware that some of the default dial rules are necessary for “normal” operation.
Removing or modifying them takes the system out of compliance with ITU
and IEEE standards.
Here are some suggestions and guidelines for modifying the dial plan:
• To add an MCU, ISDN gateway, SBC, neighbor gatekeeper, peer SIP
proxy, or simplified dialing service that can be dialed by prefix, configure
the prefix range of the new service on the appropriate page. No dial plan
change is necessary, since Rule 4 of the default dial plan takes care of
dialing by prefix.
• You can remove or disable a default dial rule if you don't want the
associated functionality. But note that Rule 6 (Dial endpoints by IP address)
is used in several scenarios where calls are received from neighbor
gatekeepers or SBCs. Removing it breaks these scenarios.
• If certain dial strings are matching on the wrong dial rule, you may need
to re-order the rules.
4 Dial services by prefix Otherwise, if the dial string begins with the
configured prefix of a service (such as an MCU,
ISDN gateway, SBC, neighbor gatekeeper, SIP
peer proxy, or simplified ISDN dialing service) the
call is routed to that service.
Note: For a SIP peer, the dial string must 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:
123alice
5 Dial external networks
by H.323 URL, email ID,
or SIP URI
Otherwise, if the address is an external address,
the call is routed to that external address (H.323
calls use an SBC to reach IP addresses outside the
enterprise network).
Examples of external addresses:
H323:johnsmith@someothercompany.com
sip:johnsmith@someothercompany.com
6 Dial endpoints by IP
address
Otherwise, if the address is an IP address, the call
is routed to that IP address (H.323 calls use an
SBC to reach IP addresses outside the enterprise
network).
Examples of IP addresses:
1.2.3.4
1.2.3.4##abc
sip:abc@1.2.3.4
sip:1.2.3.4@mycompany.com
Table 10-5 How the default dial plan works (continued)
Rule Effect