Cisco Cisco Unified IP Interactive Voice Response (IVR) 8.0(1) Troubleshooting Guide

While waiting for speech input, speech recognition waits indefinitely.

None

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This problem is caused by setting the initial timeout value to 0 (zero). The problem will 

occur only if the ASR provider is Nuance. Nuance defines an initial timeout value of zero to mean that 
it will never time out. Other vendors interpret this value to mean that it must time out immediately.

If an immediate timeout is required, do the following: When using Nuance as the 

ASR software provider, set the initial timeout value to the smallest value greater than 0 (zero). For other 
ASR vendors, simply set the initial timeout to 0 (zero).

Alternate pronunciations and nicknames are not recognized in the Name to User step when 

used in the ASR mode.

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The Name Grammar Generator was not run after a new Cisco Unified CCX installation 

or after you added or changed a nickname or pronunciation in the user administration page.

Run the Name Grammar Generator and complete the following steps:

Select Tools > User Management > Name Grammar Generation. (Run the Name Grammar Generator 
at off-peak times.) 

Verify that you have selected the correct Grammar Variant. If you use Nuance, select "Nuance." If you 
use any other vendor, select "Standard," and in the case of a mixed environment, select "Both."

Under heavy load, calls that utilize a channel from an MRCP ASR Dialog Control Group, can 

have a reduced call completion rate.

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The MRCP channels utilized by calls can take some additional time to clean up all the 

sessions set up with MRCP resources.

Overprovision MRCP ASR Dialog Control Groups by a factor of 1.2 or by an 

additional 20 percent. For example, if your application requires 100 MRCP ASR channels, then 
configure 120 MRCP ASR channels. Complete the following steps:

Select Subsystems > MRCP ASR > MRCP ASR Provider Configuration.

Click the MRCP ASR Dialog Groups link on the left panel

Either click the Add MRCP ASR Dialog Control Group link or select an existing group.