You can call mod_limit by yourself or at the dialstring. Mod_limit counts all calls to/from an extension, so it is quite accurate.

For example, we use:

<action application="bridge" data="${cond(${limit_usage(max_calls ${destination_number})} > ${MaxLimit} ? error/user_busy : ${RingAt})}" />

Which either returns "user busy" or calls the extension.

__Yehavi:

2012/5/17 Spencer Thomason <spencer@5ninesolutions.com>

Thanks that should work. How did you keep track of the calls? Calls from an extension are easy enough but an extension can be called many ways, i.e. hunts groups, transfers, etc that would need to be accounted using limit. Could you do this by modifying the dial-string?

Spencer

On May 17, 2012, at 9:09 AM, Yehavi Bourvine wrote:

Use the mod_limit to check whether there is already a call on his extension, and if so - do not try to bridge with auto answer.

__Yehavi:

2012/5/17 Spencer Thomason <spencer@5ninesolutions.com>
Hello, I'm having a problem with Polycom endpoints where the phone auto answers a page even if another call is in progress. My dialplan looks like this:

<extension name="extension-intercom">
<condition field="destination_number" expression="^\*80(\d{3,7})$">
<action application="set" data="dialed_extension=$1"/>
<action application="export" data="sip_auto_answer=true"/>
<action application="bridge" data="user/${dialed_extension}@${domain_name}"/>
</condition>
</extension>

Does anyone have any suggestions for an elegant way to solve this?

Thanks,
Spencer

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