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324 APPENDIX B: AUTOMATED BRANCH OFFICE INSTALLATION
Sample Media Gateway Configuration File (continued)
PLAYRBTONE2IP = 1
Set this parameter to control whether the ringback (RB) tone is played on
the IP side of a call. Possible values are:
■ 0 — Don’t play ringback tone
■ 1 — Ringback tone is played after the SIP 183 session progress
response has been sent.
NOTE: To enable the Media Gateway to send a 183 response, set
EnableEarlyMedia to 1.
NOTE: If EnableDigitDelivery is set to 1, the Media Gateway does not play
ringback tones and does not send a 183 response.
ISSPECIALDIGITS = 1
Enable (1) or Disable (0) the use of the star (*) or pound/hash (#) buttons
during the dialing of a number. NOTE: If you disable this feature, users
can still press either of these two keys as the first key in a dialing
sequence.
REGISTRATIONTIME = 3600
Set the duration (in seconds) of the registration of a SIP telephone. The
default value is 3600 (1 hour).
DISCONNECTONBUSYTONE = 0
Set this parameter to control whether an FXO call is released when either
Busy or Fast Busy tones are detected.
■ 0 — Do not release the call when Busy or Fast Busy is detected.
■ 1 — Release the call when Busy or Fast Busy is detected.
ISPROXYUSED = 1
Define whether a proxy server is used (1) or not (0). NOTE: If no proxy is
used, you must configure the “Tel to IP Routing” table.
ISREGISTERNEEDED = 1
Define whether the Media Gateway registers (1) with the proxy each time
that it is powerd up and when each registration interval expires, or does
not (0) register.