Altigen AltiWare OE Version 4.6 Administration Manual page 260

Setting up Extensions
enables an IP connection. As long as the connection is active,
all IP trunk calls from the first to the second system will receive
a dial tone rather than the Auto Attendant. From the dial tone,
callers can dial extension numbers on the second system.
Setting VoIP Codecs
The default codec for static IP extensions is G.711, which gives a
bandwidth of approximately 64 kbps. This is appropriate for lease lines or
high-speed connections. The default codec for dynamic IP extensions is
G.723, which gives a bandwidth of approximately 6.4 kbps. This is
appropriate for internet connections.
• G.711/G.723 compression and bandwidth requirements:
(for example, a Multilink Point-to-Point Protocol (MLPPP) or Frame
Relay Forum (FRF), with no Voice Activity Detection (VAD)
running)
— G711 10ms packet frame
— G711 20ms packet frame
— G711 30ms packet frame
— G723 30ms packet frame 6.4k rate = 18.7 kbps
If you are running G.723.1 compression, you should reserve 17 kbps
WAN link bandwidth for each channel.
You can change these defaults and set dynamic IP addressing ranges and
codecs for AltiServ-to-AltiServ connections using the VoIP Codec
Configuration window.
To open the VoIP Codec Configuration window:
• Choose VoIP Codec Configuration from the Management menu.
8-12 AltiWare OE System Installation & Administration Manual
= 100.8 kbps
= 82.4 kbps
= 76.3 kbps