User guide

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Chapter 7 - Using the MultiVOIP Software
Multi-Tech Systems, Inc. MultiVOIP User Guide
When a MultiVOIP’s connection to the Internet is through a Proxy Server, the WAN port on the
Proxy Server must have a static registered IP address. Remote MultiVOIPs will only be able to
access a MultiVOIP located behind a Proxy Server at the static IP address. This static IP
address will be used in the Phone Directory Database when assigning directory numbers to
this MultiVOIP.
The Global IP Address box must contain the static IP address of the WAN port of the Proxy
Server. The Local IP Address box must contain the local IP address of the MultiVOIP. In this
case the local IP address is not used in the Phone Directory Database. There must be a
unique static IP address on the Wan side of the proxy server for each MultiVOIP located behind
the proxy server.
Viewing Call Progress
The Call Progress dialog box displays the status of a call in progress. This dialog box is
accessed from the Setup menu by clicking Call Progress.
The ratio of Packets Lost versus Packets Received provides a general indication of the
integrity of the Internet connection. To reduce the frequency of lost packets, select a low-bit-
rate coder, such as G.723 or Netcoder. Selecting the Forward Error Correction check box on
the Voice/Fax tab in the Channel Setup dialog box enables the MultiVOIP to recover many of
the lost packets.
The Jitter (ms) value indicates the mean deviation of the difference in packet spacing at the
receiver compared to the sender for a pair of packets.
Applications Setup
Clicking Others on the Setup menu displays the Applications Setup dialog box. You can
select the Enable SNMP Agent check box and set up all the necessary parameters, enable or
disable various remote configuration methods such as TFTP (Trivial File Transfer Protocol)
Server, Web Server, Dumb Terminal Management, and Telnet Server; and assign a Password
to the MultiVOIP for Internet security. These applications enable remote viewing and changing
of the MultiVOIP configuration from anywhere on the connected internetwork.
Verify that the desired applications are selected. The default condition is all applications are
checked. To disable a given application, click to uncheck the check box and disable support.