TTS and ASR Failure in Case of the Normal MRCP Connection

Publication Date:  2015-06-29 Views:  261 Downloads:  0
Issue Description
The Media Resource Control Protocol (MRCP) service works properly, the IVR group has been correctly configured, and the mapped drive letter on the U2990 pointing to the shared directory for storing announcement files on the file server is available. However, the Text To Speech (TTS) and Automatic Speech Recognition (ASR) functions do not work.
Handling Process
 If no service drive letter is specified for the TTS and ASR functions:
1. Query the mapped announcement playing drive letter on the U2990.
LST VOLCFG:;
If the following information is displayed, the announcement playing drive letter y: is not specified as the service drive letter for the TTS and ASR functions:
--------------
Volume symbol  Volume index  Fileserver directory  Active file server index  Standby file server index  Specify as TTS/ASR service drive
y:             0             /share/vpshare        0                         255                         No                       
z:             0             /share/voice          0                         255                         No                       
(Number of results = 2)
2. Specify the announcement playing drive letter as the service drive letter for the TTS and ASR functions.
MOD VOLCFG: VOL="y:", VOLIND=0, ASRVOL=YES;
3. Restart the MSU board.
 If the value of the P80 parameter is not 1:
1. Query the P80 parameter.
LST MPRM: MN=472, ID=P80;
If the following information is displayed, the U2990 connects to the TTS and ASR servers using the ISP protocol:
LST MPRM
--------
  Module number  =  472
  Parameter ID  =  80
Parameter Name  =  TTS ModeNON-MRCP/MRCP
  Value  =  0
(Number of results = 1)
2. Set the P80 parameter to 1 globally so that the MRCP protocol is used to connect the U2990 to the TTS and ASR servers.
MOD MPRM: ID=P80, VAL=1;
If the fault still persists, obtain help through the channels described in Help Channels.
Root Cause
 The announcement playing drive letter on the unified gateway is not specified as the service drive letter for the TTS and ASR functions.
 The value of the P80 parameter is not 1.

By default, the iFly Speech Platform (ISP) is used to connect the U2990 to the TTS and ASR servers. To use the MRCP protocol, the P80 parameter must be set to 1.

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