The 'Inbound Routes' page lets you configure which destination
FreePBX uses for calls coming from Trunks. When a call is recieved by
Asterisk from a trunk, the DID and/or Caller ID is matched and the call
is dispached as per your settings.
For a SIP or IAX peer, this is usually your Account Number. If you
have an account of '888123123', putting that in here will match calls
coming from that provider. Leaving this blank will match 'any'.
The Caller ID number sent to your machine. This is not something
you should trust, as it is easily spoofable (both with Voice over IP
and normal telephone lines). Leaving it blank will, again, match any.
You can leave both of these blank to match any call, from any caller.
With these two options, you can manage the way faxes are received
over this trunk. Note that VoIP and Faxing does not work well together,
and you most probably will have problems.
Turn this on to ask for the callers Caller ID if not provided.
This is useful for telemarketers, as they are loathe to divulge this
information and will usually hang up.
The number of seconds we should wait after performing an Immediate
Answer. The primary purpose of this is to pause and listen for a fax
tone before allowing the call to proceed.:
ALERT_INFO can be used for distinctive ring with certain SIP
devices. The standard names are 'Bellcore-dr1' to 'Bellcore-dr7', Snom
phones can additionaly use a http:// url of a WAV or MP3 file.
This is a standard destination option group.