User guide

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Chapter 4 - MultiVOIP Software
The Silence Compression check box defines whether silence compression is enabled for the
selected voice channel. If enabled, the MultiVOIP will not transmit voice packets when silence is
detected, thereby reducing the amount of network bandwidth being used by the voice/fax channel.
The Echo Cancellation check box defines whether echo cancellation is enabled for the voice/fax
channel. If enabled, the MultiVOIP will remove echo-delay, which improves sound quality.
The Forward Error Correction (FEC) check box enables recovery of some corrupted or lost voice
packets. FEC adds 50 % overhead to the total network bandwidth.
The DTMF Gain group controls the volume level of the digital tones sent out for Touchtone dialing. The
Gain High and Gain Low boxes control the gain in dB (decibels) of the High and Low tones in the
tone pairs; the default gain values are -4 dB and -7 dB, respectively. DTMF Gain should not be
changed except under supervision of MultiTechs Technical Support.
Billing/Security tab
The Billing/Security tab displays the parameters for billing options, call authentication, and automatic
disconnection.
You can set up billing options for inbound and outbound calls by selecting them in the Billing Options
group and then entering the charge in cents per number of seconds.
The Call Authentication option enables password protection for outbound and inbound calls on the
selected voice/fax channel. If you enable password protection on inbound or outbound calls, you need
to also enter a password of up to 14 numeric characters in the Password box.
The Automatic Disconnect option limits call duration to the number of seconds entered in the
Disconnect After box. The default value of 180 seconds can be changed to any other value up to
65,535 (roughly 18.2 hours).