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11.5. Non-SIP Call port seizure preference
For non-SIP Calls, the port seizure preference is listed below
1. Inbound from PSTN
If the inbound FXO port was configured as "Fax" device, it will also seize only FXS ports that
"Connect Device" is configured as Fax. The Voice devices behave the similar way.
From FXO port to FXS port
Connect Device at FXO port
VOICE port
FAX port
2. Outbound to PSTN
For the calls from FXS to FXO, the ports of the same "Connect Device" type will be the prior
selection for the calls.
If there is no correct configured port is available, it will ignore the "Connect Device" setting and
create a call as the rule below.
Connect Device at FXS port
VOICE port
FAX port
For the setting of "Connect Device", please refer to 12.10 CHANNEL
11.6. Call Waiting
Call waiting function for a FXS port to answer two SIP calls.
When D answer a SIP call from other SIP phone or gateway, such as A. In normal condition,
another incoming call dial to D will be busy, such as B to D. With Call Waiting function, the phone
Connect Device at FXS port
Select VOICE port only
Select FAX port only
From FXS port to FXO port
Connect Device at FXO port
Select VOICE port (1
Select FAX port (2
Select FAX port (1
Select VOICE port (2
From the lowest port number
upward
From the lowest port number
upward
st
priority)
nd
priority)
st
priority)
nd
priority)
42
Note
Note
From the highest port
number downward
From the highest port
number downward
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