eavesdrop specific extention only

[Francois La Rochelle]

I am trying to allow eavesdrop to specific extension only for privacy reason.

I have found this info but it don't work. Any suggestion.

Specifying a group​

You can specify a "group" to limit the channels that an eavesdrop applies to. This may be useful for privacy reasons.

For example, if you only want to eavesdrop on incoming sales calls, you could set the "eavesdrop_group" variable on the original incoming channel:

<action application="set" data="eavesdrop_group=sales_call_eavesdrop"/>

Then create an eavesdrop command that only affects that "sales_call_eavesdrop" group:

<extension name="eavesdrop"> <condition field="destination_number" expression="^779$"> <action application="answer"/> <action application="set" data="eavesdrop_require_group=sales_call_eavesdrop"/> <action application="eavesdrop" data="all"/> </condition> </extension>

 

[ad5ou]

Fusionpbx eavesdrop feature is done in LUA so I'm not sure where you looking at such an example.
The default Fusionpbx dial plan for eavesdrop looks like:


As shown, only people who know the pin_number can use the eavesdrop feature. The pin_number can be blanked out if desired, and other conditions can be added to test against the "sip_from_user" or the destination etc.

 

[Francois La Rochelle]

The exemple is from Freeswitch, we are looking for a way to disable a possible eavesdrop on specific extensions, it is a customer request

 

[ad5ou]

Specific extensions that cannot be eavesdropped on, or extensions that cannot eavesdrop on others?

 

[hfoster]

What I have done is used a combination of the destination_number regex and the sip_from_user regex. Not the most user friendly way of doing it, but very flexible.

${sip_from_user} ^(2001|2002)$
destination_number ^\*34(2003|2004|2005|2006)$

 

[Francois La Rochelle]

What I have done is used a combination of the destination_number regex and the sip_from_user regex. Not the most user friendly way of doing it, but very flexible.

${sip_from_user} ^(2001|2002)$
destination_number ^\*34(2003|2004|2005|2006)$

Oh that is a great idea !!, so the way I see it is only the extension 2001 and 2002 are able to eavesdrop on extension 2003 to 2006 right ?

 

[hfoster]

Yeh, exactly. Our users would never remember the PIN or would share it willy nilly, so this worked a bit better.

 

[jeetz]

This doesnt work for me, any help?

 

[hfoster]

You've put the second line as an action and not a condition.

 

[jeetz]

<extension name="ChanSpy" continue="true" uuid="14792c06-4b8f-4744-a0f9-d702aa36c611">
<condition field="destination_number" expression="^*34(2004|2005|2006)$"/>
<condition field="${sip_from_user}" expression="^(2001|2002|2003)$">
<action application="export" data="call_direction=inbound" inline="true"/>
<action application="set" data="domain_uuid=a22d92bf-1e83-46c4-b9b4-1713df20696f" inline="true"/>
<action application="set" data="domain_name=myexample.com" inline="true"/>
<action application="answer" data=""/>
<action application="set" data="pin_number=52703130"/>
<action application="lua" data="eavesdrop lua $1"/>
</condition>
</extension>


still does not pickup......

 

[hfoster]

I believe regex capture groups are reset on each condition, though I really am not a FreeSwitch guru so I might be wrong on that. Try switching the condition orders around so the destination number is the most recent for the $1 in the lua call.

I think you can also use ?: in the sip_from condition to not care about saving it. i.e:

<condition field="destination_number" expression="^*34(2003|2004|2005|2006)$"/>
<condition field="${sip_from_user}" expression="^(?:2001|2002)$">

 

[jeetz]

nope, still no luck.....

<extension name="ChanSpy" continue="true" uuid="14792c06-4b8f-4744-a0f9-d702aa36c611">
<condition field="destination_number" expression="^*34(2003|2004|2005|2006)$"/>
<condition field="${sip_from_user}" expression="^(?:2001|2002)$">
<action application="export" data="call_direction=inbound" inline="true"/>
<action application="set" data="domain_uuid=a22d92bf-1e83-46c4-b9b4-1713df20696f" inline="true"/>
<action application="set" data="domain_name=myexample.com" inline="true"/>
<action application="answer" data=""/>
<action application="set" data="pin_number=52703130"/>
<action application="lua" data="eavesdrop lua $1"/>
</condition>
</extension>

 

[hfoster]

As per the FreeSwitch Docs, yeh. I believe I was right in that the variable is only accessible in the condition group that matched it. Whilst the forum has munged the indentation the first one will not work, as evasedrop.lua has been given either 2001 or 2002 as the variable, whilst the second one will work as it's been given the destination_number capture:

<extension name="ChanSpy" continue="true" uuid="14792c06-4b8f-4744-a0f9-d702aa36c611">
    <condition field="destination_number" expression="^*34(2003|2004|2005|2006)$"/>
    <condition field="${sip_from_user}" expression="^(2001|2002)$">
        <action application="export" data="call_direction=inbound" inline="true"/>
        <action application="set" data="domain_uuid=a22d92bf-1e83-46c4-b9b4-1713df20696f" inline="true"/>
        <action application="set" data="domain_name=myexample.com" inline="true"/>
        <action application="answer" data=""/>
        <action application="set" data="pin_number=52703130"/>
        <action application="lua" data="eavesdrop lua $1"/>
    </condition>
</extension>

<extension name="ChanSpy" continue="true" uuid="14792c06-4b8f-4744-a0f9-d702aa36c611">
    <condition field="${sip_from_user}" expression="^(2001|2002)$"/>
    <condition field="destination_number" expression="^*34(2003|2004|2005|2006)$">
        <action application="export" data="call_direction=inbound" inline="true"/>
        <action application="set" data="domain_uuid=a22d92bf-1e83-46c4-b9b4-1713df20696f" inline="true"/>
        <action application="set" data="domain_name=myexample.com" inline="true"/>
        <action application="answer" data=""/>
        <action application="set" data="pin_number=52703130"/>
        <action application="lua" data="eavesdrop lua $1"/>
    </condition>
</extension>

 

[jeetz]

ive got it working.....but now the pin doesnt enter lol


<extension name="ChanSpy" continue="true" uuid="14792c06-4b8f-4744-a0f9-d702aa36c611">
<condition field="destination_number" expression="^*33(d{2,7})$">
<action application="export" data="call_direction=inbound" inline="true"/>
<action application="set" data="domain_uuid=a22d92bf-1e83-46c4-b9b4-1713df20696f" inline="true"/>
<action application="set" data="domain_name=myexample.com" inline="true"/>
<action application="answer" data=""/>
<action application="set" data="pin_number=2222"/>
<action application="lua" data="eavesdrop.lua $1"/>
</condition>
</extension>

 

[jeetz]

okay, entered pin number, surprisingly its not the pin i kept, but its this 58094965 and i just want my callee hearing, not my caller hearing any idea? and why does the call finish, when caller hangs up, any ideas?

edit: this is what all can be done while hearing, Listen to the call. Press 1 remote, 2 local, 3 full conversation, 0 mute

now only need not to drop the call, when caller hangs up.....

@hfoster your given code also works like a charm......but hangs up, any idea about that?


<extension name="ChanSpy" continue="true" uuid="14792c06-4b8f-4744-a0f9-d702aa36c611">
<condition field="${sip_from_user}" expression="^(2001|2002)$"/>
<condition field="destination_number" expression="^*34(2003|2004|2005|2006)$">
<action application="export" data="call_direction=inbound" inline="true"/>
<action application="set" data="domain_uuid=a22d92bf-1e83-46c4-b9b4-1713df20696f" inline="true"/>
<action application="set" data="domain_name=myexample.com" inline="true"/>
<action application="answer" data=""/>
<action application="set" data="pin_number=52703130"/>
<action application="lua" data="eavesdrop lua $1"/>
</condition>
</extension>

 

[hfoster]

It hangs up because it's an eavesdrop, and not a conference. You might be able to hack the eavesdrop.lua into something where it keeps the session alive, maybe. Way beyond me though. As for the pin, I'm going to guess it was cached.

Option 2 is what you want, local is the 'whisper' feature. Option 3 turns it into kind of a 3 way call.

 

[jeetz]

ok @hfoster thanks a lot buddy.......

anyone got a "hacked the eavesdrop.lua into something where it keeps the session alive"

 

[jeetz]

https://www.pbxforums.com/threads/call-drop-on-eavesdrop-usage.2573/ @hfoster this one?

 

[jeetz]

It hangs up because it's an eavesdrop, and not a conference. You might be able to hack the eavesdrop.lua into something where it keeps the session alive, maybe. Way beyond me though. As for the pin, I'm going to guess it was cached.

Option 2 is what you want, local is the 'whisper' feature. Option 3 turns it into kind of a 3 way call.

@hfoster any idea where to look if i want to keep the call connected?

 

[hfoster]

Not really no. I have never written a lua script for Freeswitch, so I've got no clue. Perhaps you would have to create something using mod_spy instead. This is more in the realms of FreeSwitch rather than FusionPBX though.