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Preliminary November 23, 1998
MultiVoice Gateway for the MAX— User’s Guide
Configuring MultiVoice
MultiVoice configuration examples
!
Caution:
If you elect to use both ANI and PIN authentication, entry of an invalid PIN will
cause the call to be rejected. If you enter a valid PIN, but the ANI of the calling number does
not match the information in the user database, the call will be rejected.
Configuring audio compression
To configure the default audio compression scheme for a MultiVoice Gateway:
1
Open the Ethernet > Mod Config > VOIP Options menu.
2
Set the Pkt Audio Mode parameter by pressing Enter to toggle through the list of
supported audio compression and coding methods. For Example:
Ethernet
Mod Config
Pkt Audio Mode=G.711 U Law
The default value for this parameter is G.711 U law. You may toggle through and select
values representing these supported audio codecs:
3
Set the Frames/Packet parameter by pressing Enter to open the edit field, and entering a
value between 1 and 10 (packets). For Example:
Ethernet
Mod Config
Frames/Packet=1
The default is 4.
Note:
When a different audio codec is dynamically selected during call setup, the
MultiVoice Gateway uses the default value of 4 frames per RTP packet to process that call,
4
Press Enter to save your change.
5
Set the Silence Detect/CNG parameter by pressing Enter to toggle between Yes and No,
enabling or disabling silence detection and suppression and comfort noise generation. For
Example:
Ethernet
Mod Config
Silence Detect/CNG=Yes
6
Press Enter to save your change.
You must set
Silence
Detect/CNG=Yes
on both the local Gateway and distant
Gateway. Comfort noise is generated by a MultiVoice Gateway only when using the G.729
codec (
Pkt
Audio
Mode=G.729
). This parameter defaults to N/A when
Pkt
Audio
Mode=G.723
. When this parameter is enabled,
Silence
Detect/CNG=Yes
, the
dynamic jitter buffer is not used (
Enable
Adaptive
Jtr
Buf=N/A
and
Max
Jtr
Buf
Size=N/A
).
Parameter value
Audio codec
G.711 U Law
G.711 U Law
G.711 A Law
G.711 A Law
G.729
G.729(A)
G.723
G.723.1
