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Setting up Extensions
•
Using static IP addressing, the extension user logs in from the station
having the IP address. An advantage for virtual extensions is that the
user doesn't have to log in at all; when the user connects to the system,
the extension is immediately recognized as an IP extension. When
physical extensions connect, on the other hand, the system prompts the
user to log in. Static addressing is more convenient for users and may
be preferred by users who work primarily at a specific location.
•
Using dynamic IP addressing, the IP extension can log in from any
IP address. However, the IP extensions must always log in via the Auto
Attendant and log into voice mail to activate the IP extension. Users
who travel may well prefer dynamic addressing.
Note: AltiGen IP Phone extension users should not activate their IP
Phone by logging into voicemail — instead, #27 should be
used to log in.
Setting VoIP Codecs
The default codec for static IP extensions is G.711 with 64 kbps for voice
packets. This is appropriate for lease lines or high-speed connections. The
default codec for dynamic IP extensions is G.723 with 6.3 kbps. This is
appropriate for internet connections. For voice, G.723 AB uses 8 kpbs.
G.711/G.723/G729 bandwidth requirements for Ethernet:
— G711 10ms packet frame ≅ 110 kbps
— G711 20ms packet frame ≅ 87 kbps
— G711 30ms packet frame ≅ 80 kbps
— G723 30ms packet frame 6.4k rate ≅ 22 kbps
— G729 20ms packet frame ≅ 31 kbps
— G729 30ms packet frame ≅ 24 kbps
Note:
Bandwidth for WAN varies depending on the type of WAN
connection. Bandwidth requirements for WAN should be less than
Ethernet requirements.
You can change these defaults settings 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.
10-12 AltiWare OE System Installation & Administration Manual
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Troubleshooting
