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Cisco Bug: CSCtb99563 - VXML gateway ends call with exception in large VXML app with ASR/TTS

Last Modified

Feb 22, 2014

Products (1)

  • Cisco IOS

Known Affected Releases

12.4(15)T6 15.0(1)M2.7

Description (partial)

IOS gateway is used as a VXML gateway with the VXML browser functionality. The VXML application contains several forms (menus, selection items, ...). 

They gateway may end the call due an incorrect exception being thrown which is not caught by the VXML application. VXML debugging on the gateway may show :
Aug 28 12:21:03.414: //2510146/D4561030A8A0/VXML:/vxml_formitem_select:

   CALL_ERROR; http://vxml2:8080/CVP/Server

   too many form items selected continuously
* ASR / TTS speech servers are used to interact with the caller, this issue has not been observed in regular DMTF input / prompt playing scenarios.
* the VXML application takes  ratherlong, it takes about 50 form elements before this limit is triggered, depending on the amount of forms and typical answers, a call would have to last over 5 minutes to able to hit this limit.
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