[VoiceOps] Cisco Gateways, REFER and TBCT/ECT

[Jason L. Nesheim]

Cisco gateways do support TBCT in when the ISDN PRI is configured in user mode. This requires TBCT support on the network switch you're connecting it to. You'll also need to enable the TBCT supplementary service feature on the Serial interface in the router. 

For example: 

lab-cisco1(config)#int ser0/0/1:23 
lab-cisco1(config-if)#isdn supp-service tbct ? 
notify-on-clear subscribed to get notification on transfered call clear 
tbct-with-crflg tbct req with cr flg 
<cr> 

When the router receives a REFER on the SIP side for an existing call it will initiate a TBCT remote operation on the PRI to the switch. If the switch supports it, the call will be transferred. 




-- 
Jason Nesheim 




----- Original Message ----- 
From: "RJ Auburn" <rj at voxeo.com> 
To: voiceops at voiceops.org 
Sent: Thursday, September 17, 2009 5:46:25 PM 
Subject: [VoiceOps] Cisco Gateways, REFER and TBCT/ECT 

Folks, 

Has anyone had any luck getting the Cisco VoIP gateways to do a TBCT 
or ECT when they receive a REFER message for a SIP call? In theory 
there is a way to do this in TCL script but I have never been able to 
get anyone at Cisco who knew how to actually configure it or make it 
work. 

For what it's worth AudioCodes supports this out the box in an 
extremely painless manner. As close to plug and play as you can get in 
TDM land. 

Hopefully someone out here on this list has gotten it working on a 
Cisco and can lend a hand. 

Thanks, 

RJ 

--- 
RJ Auburn 
CTO, Voxeo Corporation 
tel:+1-407-418-1800 

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