Microsoft—Polycom Meeting Scenarios
1-30
The New Phone Number dialog box opens.
The MGC system supports the use of a dial plan for parsing and
interpreting a received number as an H. 323 alias, SIP URI or ISDN
number to be used accordingly by the MGC system for initiating a
callback to that device.
The E.164 number (no SIP URI) is converted into a SIP URI by Office
Communicator, inserted into the Refer-To field and sent in the
REFER transaction to the MGC system.
For example: the user enters "1234567". The Refer-To field sent by
Office Communicator to the MGC will have:
"sip:1234567@domain;user=phone".
Now the MGC unit can use the dial plan, as defined in system.cfg, to
parse and interpret the "1234567" string and initiate a corresponding
H.323, SIP, ISDN or PSTN dial out.
The REFER request sent to MGC contains a "ms-associated-sip-uri"
field that includes the invitee’s URI. The MGC system can use this
information to identify the name of the new participants in
notifications it sends to Office Communicator conference watchers.