Personally I'd just use the Blind Transfer features on your handsets. 1000 picks up the call, presses transfer on the phone, then dials 1001 and hangs up. 1001 rings and is connected to the transferred call. Sure you'e not got the BLF, but the idea works fine. You could use call parking, but that has more steps to it.<br>
<br><div class="gmail_quote">On 2 November 2012 04:16, <span dir="ltr"><<a href="mailto:sms@icefire.qza.net.au" target="_blank">sms@icefire.qza.net.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all,<br>
<br>
I have a scenario that I'm thinking of implementing, but not sure if it's<br>
possible, so here's the details:<br>
<br>
Extensions 200 to 250 are regular internal sip phones, contained in a call<br>
group (Ext 1000)<br>
<br>
Extensions 300 to 305 are SIP-GSM and SIP-PSTN gateways with SIP client<br>
firmware, namely those cheap GOIP GSM units on ebay, plus an SPA3000.<br>
These are to be configured with the logon credentials of the extension and<br>
behave as a typical SIP client.<br>
<br>
The dialplan will route incoming and outgoing calls via these gateways as<br>
if they were trunks. They will restricted privileges to prevent toll<br>
fraud. The phones will either be Yealink T28p or Grandstream GXP2124, it<br>
depends if GS can respond with a fix for their horrible AGC or not. The<br>
gateways will be subscribed to the phone's DSS keys as BLF's.<br>
<br>
Now, all this so far is reasonably straight forward. The next part is the<br>
tricky part (you might've guessed where this is going....)<br>
<br>
Let's say a call comes in on 300, routes to the call group and is picked<br>
up by 1000, who then puts the call on hold. The BLF key for 300 shows it<br>
as busy/on hold. 1000 then calls 1001 to take the call. 1001 then presses<br>
BLF 300, which causes the call to be transferred to them and automatically<br>
answered.<br>
<br>
So is there any way in freeswitch to replicate this behavior? I know it's<br>
possible to do SAA, but this gets tricky if I want to have time based call<br>
groups, or to share incoming lines between branches. The method above<br>
allows the lines to be present on all phones, while still configuring call<br>
groups in the usual way and more or less replicating old key system<br>
behavior.<br>
<br>
Cheers,<br>
Francis<br>
<br>
<br>
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