Dave,
There are NO schematics you will ever get for the Trantalks - very closely held by Lucent/Avaya.
Use the basic handset test procedure for testing. Its in the manual!
Are you looking to get into the Transtalk repair business? Its a challenge!
Andrew Roach
President - Drew Telecom Group, Inc.
Lucent/Avaya Voice Mail-Component-Transtalk Repair Specialists
Lucent/Avaya Telecom Brokers/Resellers
drew@triton.net
269-685-5400 - voice
269-685-5500 - fax