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How to configure the Tesco Internet Phoneon an Asterisk 1.4.x System

The service is run by FreshTel/Voicestream for them.
Configuration in Asterisk is simple, beside the authentication of incomming calls, where they don't use the password you've chosen.
Codec wise, if you think you have too much echo on the line, try to only include the gsm codec, this might help.
Definitions iax.conf extensions.conf
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