Altigen AltiWare ACC 5.2 Administration Manual page 228

Chapter 16: Setting Up IP Extensions
The media channel implementation consists of the following elements:
Configure Codec Profile—Creating a profile for each codec type, jitter buffer,
•
packet length, DTMF tone delivery, and ring back tone treatment (SIP Early
Media).
Assign Codec to Device—Configuring codec profile to a single IP address or a
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range of IP addresses.
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AltiWare ACC 5.2 Administration Manual