Installation guide

Troubleshooting 323

Text-to-Speech

Text-to-speech does not read e-mail messages in the correct language.

If multiple text-to-speech languages are installed on the messaging system, the system examines the text and

encoding of an e-mail message to determine the language it is written in. The software identifies the language by

comparing fragments of text (N-grams) to standard profiles of known languages, then calculating a probability that the

message matches one of the profiles.

If the detected language is not installed, or if the system cannot identify the language, the system attempts to play the

message using another installed language. The system determines which language to use in the following order:

• The system attempts to play the message using the subscriber’s selected language. See “Understanding Default

Profile Settings — Overview.”

• If the subscriber has not selected a language, or if the text-to-speech version of the specified language is not

installed, the system plays the message in the system default phone conversation language. See “Viewing the

Installed System Languages.”

• If the text-to-speech version of the system default phone conversation language is not installed, the system

attempts to play the message in the language specified in the opt/vmail/etc/lh_tts.ini file on the messaging system

server.

Confirm that the text-to-speech languages specified are installed.

NOTE

THE MESSAGING SYSTEM DOES NOT ATTEMPT TO DETECT A LANGUAGE IF THE E-MAIL MESSAGE TEXT IS LESS THAN 25 CHARACTERS, AND

PLAYS THE MESSAGE IN THE SYSTEM DEFAULT LANGUAGE.