VoIP Mailing List Archives

[merul at mac.com]

I have a Freeswitch setup working on an Alix embedded platform in
conjunction with a USB FXO device from Sangoma. My goal is to be able
to either answer incoming calls on a softphone or on a POTS handset
elsewhere in the building, and to also be able to make outgoing calls
from either. For clarity, the analogue line has two physical
extensions, one connected to the POTS and the other to the FXO.

I can make and receive calls fine, but have problems when the call is
answered on the POTS handset.

Here is the dialplan I initially used in /opt/freeswitch/conf/
dialplans/public/01_incoming.xml:

<include>
<extension name="public_did">
<condition field="${strftime(%w)}" expression="^(\d)$">
<!-- There seems to be a delay of 7 seconds from when FS starts
dealing with the call and from when it starts ringing -->
<action application="sleep" data="23000"/>
<action application="set" data="domain_name=$${domain}"/>
<action application="transfer" data="1001 XML default"/>
</condition>
</extension>
</include>

It's pretty basic, and if the softphone is not registered or does not
answer then the call goes to voicemail. However the call will always
go to voicemail, and the voicemail application will begin to execute
after the call has been answered on the POTS handset.

I've been trying to make the dialplan more useful, by having it ring
the softphone immediately, and only transfer the call to the voicemail
application if the line is still ringing. I'm in the UK, hence my
choice of frequencies in the tone_detect application:

<include>
<extension name="public_did">
<condition field="${strftime(%w)}" expression="^(\d)$">
<!-- There seems to be a delay of 7 seconds from when FS starts
dealing with the call and from when it starts ringing -->
<action application="set" data="call_timeout=23"/>
<action application="set" data="continue_on_fail=true"/>
<action application="set" data="hangup_after_bridge=true"/>
<action application="bridge" data="sofia/internal/1001%$$
{domain}"/>
<action application="sleep" data="23000"/>
<action application="tone_detect" data="ring 400,450 r +5000
set RING=true"/>
<action application="transfer" data="public_answer_and_email"/>
</condition>
</extension>

<extension name="public_answer_and_email">
<condition field="RING" expression="true">
<action application="answer"/>
<action application="voicemail" data="default $${domain} 1001"/>
</condition>
</extension>
</include>

Unfortunately, this is not working, and the logs are not yielding
anything the is helpful to me. Is my use of the tone_detect
application and the basic dialplan correct?

Merul
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