topic Re: SIP to SIP TCL transfer in Call Control

SIP to SIP TCL transfer

NinjaPirate — Mon, 22 Jun 2015 20:55:55 GMT

Hi Guys,

I am wondering if somebody can provide me with a sample TCL script to be used in incoming dial-peer for SIP calls redirect on my CUBE gateway. I.e. I need to send SIP 3xx to ITSP, so they will redirect or divert this call accordingly and with that release both call legs on my local CUBE.

Thanks!

Re: SIP to SIP TCL transfer

NinjaPirate — Tue, 23 Jun 2015 18:55:29 GMT

Actually I have created a simple vxml script myself

<?xml version="1.0" encoding="UTF-8"?>

</transfer>

</form>

</vxml>

And it works on my CUBE router, does the transfer, when I enable service on the inbound dial-peer, but the problem is that it does not actually send REFER message but sends INVITE instead, therefore keeping CUBE in the loop. I need this to be like RTT release trunk transfer, wondering if this is something that can be done on the CUBE.

thanks!

Re: SIP to SIP TCL transfer

Raghavendra G V — Thu, 25 Jun 2015 12:12:29 GMT

You can set mode as below for redirect, for sample scripts and programming guide please refer https://developer.cisco.com/site/voice-gateway/documentation/

set callInfo(mode) REDIRECT
leg setup $ReferDnis callInfo leg_incoming

please refer below H450 TCL script also

https://software.cisco.com/download/release.html?mdfid=277641082&softwareid=283451126&release=2.0.1.0&rellifecycle=&relind=AVAILABLE&reltype=all

Thanks,
Raghavendra

Re: SIP to SIP TCL transfer

NinjaPirate — Thu, 25 Jun 2015 20:18:51 GMT

Thanks very much Raghavendra !

So the method you submitted ends up as SIP REFER / NOTIFY being submitted back to calling party, I am wondering what the method would be to send SIP 3XX message i.e. 302, moved temporarily instead of REFER?

Here is my code that I did for SIP REFER

proc act_Media { } {

global dest

set dest 22736

leg setupack leg_incoming

leg proceeding leg_incoming

leg connect leg_incoming

media play leg_incoming flash:welcome.au

}

# setup the call, connect caller to called party

proc act_Setup { } {

global dest

puts ">>> Tcl: proc act_Setup <<<"

puts ">>> TCL:Final Dest: $dest <<<"

set callInfo(originationNum) 23402

set callInfo(mode) REDIRECT

#set callInfo(rerouteMode) REDIRECT_ROTARY

leg setup $dest callInfo leg_incoming

}

proc act_CallSetupDone { } {

set status [infotag get evt_status]

puts "\n CALL STATUS = $status"

if { $status == "ls_000"} {

puts "\n You have sucessfully placed the call to the destination !"

} else {

puts "\n Sorry your call was not connnected !"

call close

}

# disconnect the call

proc act_Cleanup { } {

puts ">>> Tcl: act_Cleanup <<<"

call close

}

set fsm(any_state,ev_disconnected) "act_Cleanup same_state"

set fsm(CALL_INIT,ev_setup_indication) "act_Media PLAYPROMPT"

set fsm(PLAYPROMPT,ev_media_done) "act_Setup PLACECALL"

set fsm(PLACECALL,ev_disconnected) "act_Cleanup CALLDISCONNECT"

set fsm(PLACECALL,ev_setup_done) "act_CallSetupDone CALLDISCONNECT"

set fsm(CALLDISCONNECT,ev_disconnected) "act_Cleanup same_state"

set fsm(CALLDISCONNECT,ev_disconnect_done) "act_Cleanup same_state"

fsm define fsm CALL_INIT

Re: SIP to SIP TCL transfer

Raghavendra G V — Fri, 26 Jun 2015 05:09:16 GMT

please try with alert as below.

set callInfo(mode) REDIRECT_AT_ALERT

Thanks,

Raghavendra

Re: SIP to SIP TCL transfer

NinjaPirate — Fri, 26 Jun 2015 14:22:39 GMT

Thanks,

but it sends INVITE now, I need that thing to send 3xx no refer no invite, something like 302 moved temprorarily

Re: SIP to SIP TCL transfer

Raghavendra G V — Mon, 29 Jun 2015 05:10:43 GMT

I don't think we can send 302 with TCL script other than sip invite or refer message.

Thanks,

Raghavendra

Re: SIP to SIP TCL transfer

AshG — Thu, 02 Jul 2015 13:15:32 GMT

Hello,

You can disconnect the leg like this in tcl.

leg disconnect leg_incoming -c1

c1 is cause 1 for ISDN cause code "Unallocated or unassigned number"

you can find the list of cause codes here:

Q.931 - Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Q.931

Re: SIP to SIP TCL transfer

paolo bevilacqua — Thu, 02 Jul 2015 17:05:41 GMT

please try with alert as below.

set callInfo(mode) REDIRECT_AT_ALERT

The mode you mentioned is undocumented. Documented modes are:

rotary
redirect
redirect_rotary

Which other modes exists, and what is their differences from the documented modes ?

Re: SIP to SIP TCL transfer

yawming — Thu, 02 Jul 2015 17:39:35 GMT

There are REDIRECT_AT_ALERT and REDIRECT_AT_CONNECT, commonly used for TBCT.

REDIRECT_AT_ALERT -- if doing TBCT, PSTN switch will disconnect transfer by leg and trying to connect to transfer to leg. (there is a chance that transfer to leg won't get connected but transfer by leg disconnected already)

REDIRECT_AT_CONNECT transfer by leg is disconnected only when the transfer to leg is connect.

So the difference is when to release transfer by leg when doing TBCT.

Re: SIP to SIP TCL transfer

jcuadros — Fri, 13 Jul 2018 04:42:22 GMT

hello Farhad,

i'm having a need that may be as youre's, i was wondering if you can help me. i have not a gw connected to PSTN (E1 or Sip trunk) and i need that when an specific number is called inbound i do play a prompt asking for the destination number and then i just need to add to the dialed number an static @domain.com to transfer the call internally you think you can show me how to achieve that? can you share you script?

thanks

Re: SIP to SIP TCL transfer

Raghavendra G V — Fri, 13 Jul 2018 07:27:04 GMT

you can try to set destination as below.

set dest "sip:1234567@abc.com"

leg setup $dest callinfo leg_incoming

Thanks,

Raghavendra