Hello, we are using and cisco 2921 as an analog to SIP gateway. Calls from an very old key system comes into the 2921 via an FXO port and are PLAR'd to the an Voip Dial peer configured with SIP to an IVR application. IF an user dials 0 to go to an operator this send a SIP refer back to the 2921 with the extension to refer too, the 2921 creates a new call leg and "hair pins" the call using two FXO ports. I would like to know if there is a way to correlate and SIP Refer to analog hook flash, if not possible are there other creative ways to acheive this with an intercepting TCL or VXML script?

Yaw-Ming,

Thanks for the quic reply!

"Do you mean when Cisco voice gateway received a SIP REFER you want to send to analog as a hook flash ?"

Yes, the orignal call leg is an FXO port that than goes to a SIP dial-peer, when the SIP IVR send an SIP refer back to the gateway, I would like the gateway to perform a hookflash on the originating FXO call leg, dial the REFER To digits and disconnect the FXO call leg.

very similar to http://www.cisco.com/en/US/docs/ios-xml/ios/voice/sip/configuration/15-1mt/Configuring_SIP_Support_for_Hookflash.html#GUID-563DBC62-75C1-4039-838E-AF3AE0956CB7 only with FXO and in reverse.

Now we have leg A, leg B, transfer to number. Which leg you like to connect to transfer to number ?

Leg A would hook flash and transfer to extension XXXX leaving no call legs in GW.

At this moment we can do leg A <-> refer_to or leg B <--> refer_to. Is this something you like to do ?

Not following....
 
 
(key system)-->FXO(GW)SIP dialpeer-->SIP IVR (not on GW)
 
Phone A -->(key system)-->FXO(GW)SIP dialpeer<-->SIP IVR (not on GW) answers
Phone A <-->(key system)<-->FXO(GW)SIP dialpeer <--(refer xxxx) SIP IVR (not on GW)
PHone A and B (key system)<--FXO(GW) Hook Flash dial xxxx
Phone A and B are talkiing (key system)

Yes hook flash is sent to key system. Both phones A and b are phones on the key system.

Do you mean send "key system" "hookflash+dtmf digit" and "key system" will take it from there. As soon as GW(Tcl) send "hookflash+dtmf" Tcl can exit the call control ? Yes

Hi Yaw-Ming, thanks for the guidance.

We are unable to find any good examples on how to execute on the leg sendhookflash. can you provide any guidance on usage? for example after leg_sendhookflash we don't see any new call legs to play dtmf (media play? senddigits?).

Thanks in advance.

Hi,

I guess I'm not sure how to proceed after sending a hook flash to the fxo port. tried sending leg proceed but, the call disconnects.
proc act_GetDest { } {

puts "\n We have entered into the act_GetDest Procedure after receiving ev_media_done event"
puts "\n Now collect digits from the user"
set param(dialPlan) true
set param(dialPlanTerm) true
leg collectdigits leg_incoming param
}

proc act_GotDest { } {
global dest
global DisconnectedLegId
global ActiveCallType
global CONNECTION
global HANDOFF
global LEG
puts "\n We have entered into the act_GotDest Procedure after receiving ev_collectdigits_done event"
set status [infotag get evt_status]
puts "\n DIGIT COLLECT STATUS = $status"
set dest [infotag get evt_dcdigits]
puts "\n The destination you want to connect is: $dest"
# leg setup $dest callInfo
# leg setupack leg_incoming
# leg proceeding leg_incoming CallInfo
media play leg_incoming flash:en_enter_dest.au
fsm setstate same_state
log "Sending hookflash"
leg sendhookflash leg_incoming
set LEG(NEW) [string trim [infotag get evt_legs]]
leg proceeding $LEG(NEW) -f