Default is No. If set to Yes, device will send only one m line in SDP, regardless
how many m field in the incoming SDP.
Custom Ring Tone 1 to 3 with associate Caller ID: when selected, if Caller ID is
configured, then the device will ONLY uses this ring tone when the incoming call
is from the Caller ID. System Ring Tone is used for all other calls.
When selected but no Caller ID is configured, the selected ring tone will be used
for all incoming calls using the FXS port or Profile. Distinctive ring tones can be
configured not only for matching a whole number, but also for matching prefixes.
In this case symbol * (star) will be used.
For example:
if configured as *617, Ring Tone 1 will be used in case of call arrived from the
area code 617. Any other incoming call will ring using cadence defined in
parameter System Ring Cadence located under Advanced Settings
Configuration page.
Note: If server supports Alert-Info header and standard ring tone set (Bellcore)
or distinctive ring tone 1-10 is specified, then the ring tone in the Alert-Info
header from server will be used. Bellcore rings and tones are independent from
custom ring tones. The custom ring tones can also be specified by alert-info
header, for example:
Alert-Info: <http://127.0.0.1>;info=ring5