User guide

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Chapter 3 - Software Loading and Configuration
7. To change the voice coder, select the channel from the Select Channel list, then select the
new voice coder entry from the Voice Coder list.
If you changed the voice coder, ensure that the same voice coder is used on the voice/fax
channel you are calling. Otherwise, you will always get a busy signal.
9. The Fax group enables you to select the maximum baud rate for faxes. If you do not plan to
send or receive faxes on a given voice/fax channel, you can disable faxes in the Fax group.
10. You can enable the voice/fax advanced features by selecting the Silence Compression, Echo
Cancellation, or Forward Error Compression check boxes in the Miscellaneous group.
The Silence Compression check box defines whether silence compression is enabled for the
selected voice channel. If enabled, the MultiVOIP 400/800 will not transmit voice packets when
silence is detected, thereby reducing the amount of network bandwidth being used by the voice
channel.
The Echo Cancellation check box defines whether echo cancellation is enabled for the
selected voice channel. If enabled, the MultiVOIP 400/800 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.
11. The Billing/Security tab displays the parameters for automatic disconnection, billing options,
and dialing options.
13. 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.