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Preliminary November 23, 1998
MultiVoice Gateway for the MAX— User’s Guide
Configuring MultiVoice
Configuration options
The Pri GK Retries parameter sets the number of attempts a MultiVoice Gateway will make
whenever it tries to reregister with the MultiVoice Access Manager at GK IP Adrs. Since a
Gateway may not successfully register on its first attempt, the value for this parameter
represents the number of repeated registration attempts a Gateway makes during a
reregistration cycle, until it either registers successfully with the MultiVoice Access Manager
at GK IP Adrs or until all attempts have failed. Setting Pri GK Retries to zero (0) disables this
feature.You may enter any value between 0 and 200. Changes to this value become effective
with the next registration cycle. This value defaults to 1.
PIN collection
The VPN Mode parameter enables/disables collection of a MultiVoice user’s Personal
Identification Number (PIN). This parameter controls whether a user must enter a separate PIN
code when placing a MultiVoice call. If you set
VPN
Mode=No
(default), the MultiVoice
Gateway prompts callers for their PIN before they enter the destination phone number.
When callers dial into the MultiVoice Gateway, it presents them either with a dial tone or with
prompts indicating that MultiVoice Access Manager requires PIN authentication.
The MultiVoice Access Manager creates user PINs automatically when you create user
records.
Note:
This parameter has no effect on Automatic Number Identification (ANI)
authentication.
Voice compression and coding
Voice is transmitted across an IP network as compressed audio frames, which are
compressed/uncompressed by the MultiVoice Gateway.
The Pkt Audio Mode parameter is used to select the default audio codec (coder/decoder) used
to pack (and unpack) analog speech into digital audio frames. The MultiVoice Gateway
supports the following audio codecs:
•
G.711 U Law
•
G.711 A Law
•
G.729(A)
•
G.723.1
This parameter defaults to G.711 U Law. Changes to this parameter become effective when
you reset the MultiVoice Gateway.
The Frames/Packet parameter sets the number of compressed audio frames assigned to each
RTP packet for the audio codec defined by the Pkt Audio Mode parameter. You may assign a
value ranging from 1 to 10 packets; the default is 4.
Lowering the value for this parameter reduces the delay and distortion introduced into any
given voice call. But a lower value can also degrade performance, because it results in more IP
packets per voice call.