[Freeswitch-users] Finding all active calls belonging to the same phone

[John Wehle]

To duplicate our old PBX park functionality I need for a user who's
on a call to be able to pick up a second line and dial a number to
park the other call which is on his phone.  I have something working,
however am curious if there's a better way to accomplish this.

Specifically I'm curious if there's a recommended way to find all the
calls to / from the same phone / channel.

I ended up configuring *5 to call a javascript program which:

  a) Gets the uuid from the session and uses it to search "show channels"
     to find the channel name.

  b) Normalizes the channel name and uses it to search "show channels"
     to find an uuid associated with the channel which is different from
     the one that invoked *5.

  c) Uses the uuid from "b" to search "show calls" to find the peer
     uuid.

  d) Uses uuid_setvar to set hangup_after_bridge=false and uuid_transfer
     to transfer the peer uuid to the proper fifo.

One of the problems I ran into is the channel name has slightly different
formats depending on whether it is an inbound or outbound channel.  E.g.:

  sofia/internal/1003 at XXX.XXX.XXX.XXX
  sofia/internal/1003 at XXX.XXX.XXX.XXX:5060
  sofia/internal/sip:1003 at YYY.YYY.YYY.YYY:5060;transport=udp;...

where XXX is the freeswitch box and YYY is the phone.  I created the
following function to normalize the channel name for comparison:

function normalize_channel_name (name, direction, ip_addr)
  {
  var re = /^sofia\//g;
  var length = name.search (re);
  var new_name = name;
 
  if (length == -1)
    return new_name;

  if (direction == "inbound") {
    re = /@.*$/g;

    new_name = name.replace (re, "@" + ip_addr);
    }
  else if (direction == "outbound") {
    re = /\/sip:(.*@[^:]*):.*$/g;

    new_name = name.replace (re, "/$1");
    }

  return new_name;
  }

Suggestions for a better approach?  Keep in mind that my existing user
population expects (for better or worse) to use *5 to park the call on
their phone so I'm somewhat limited in what I can do.

-- John
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|   Feith Systems  |   Voice: 1-215-646-8000  |  Email: john at feith.com  |
|    John Wehle    |     Fax: 1-215-540-5495  |                         |
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