Multitech Multivoip 100 Model Mvp110 Voice/fax Over Ip Networks User Guide

41 Chapter 4 - MultiVOIP Software
Introduction
This chapter describes various features of the MVP110 software that enable you to change (update)
the configuration of your MVP110. The basic configuration parameters were entered during the
loading of the software (Chapter 3). The MVP110 software and configuration utilities described in this
chapter enable you to change that initial configuration as necessary.
The primary interface to the MVP110 software is the Main menu (MVP110 Setup is on the title bar)...

42 Chapter 4 - MultiVOIP Software
MVP110 Configuration
The MVP110 Setup menu consists of 10 buttons, an Events window in the middle of the menu, and a
status bar at the bottom of the menu.  The 10 buttons allow you to display and change the voice
channels and IP protocol parameters, display and manage the Phone Book listing, view statistics and
call progress, and change features such as SNMP Agent, Telnet Server, WEB Server, and assign a
MVP110 password.
The Events window in the lower third of the Setup...

43 Chapter 4 - MultiVOIP Software
Changing Channel Parameters
The channel parameters include the interface type and its options, voice and fax settings, billing and
security, and voice communications for the country and region in which the MVP110 is operating. The
Channel Setup dialog box, accessed by clicking Voice Channels on the Setup menu, has four tabs
that display the following categories of channel information -- Interface, Voice/Fax, Billing/Misc, and
Regional.
Interface tab
The Inter Digit Time...

44 Chapter 4 - MultiVOIP Software
Voice/Fax tab
The Voice/Fax tab controls voice and DTMF gain, voice coder, fax settings, and advanced options.
The Voice Gain group enables you to select the Input and Output voice gain. Gain is the increased
signaling power that occurs as the signal is boosted by the MVP110. The Input Gain list defines the
input gain for this voice channel. Before your MVP110 digitizes voice, the volume can be increased or
decreased. Input gain modifies the level of the audio coming in...

45 Chapter 4 - MultiVOIP Software
remove echo and improve the quality of sound; and, Forward Error Correction allowing some of the
voice packets that were corrupted (or lost) to be recovered. FEC adds an additional 50% overhead to
the total network bandwidth consumed by the voice channel.
Billing/Misc
This tab controls the parameters for auto call, automatic disconnection, billing options, and dynamic
jitter buffer.
The Auto Call option allows the local MVP110 to call a remote MVP110 without the user...

46 Chapter 4 - MultiVOIP Software
minimum and maximum values. An Optimization Factor adjustment controls how quickly the length of
the Jitter Buffer is increased when jitter increases on the network. The length of the jitter buffer
directly effects the voice delay between MVP110 gateways.
The default minimum dynamic jitter buffer of 150 milliseconds is the minimum delay that would be
acceptable over a low jitter network. The default maximum dynamic jitter buffer of 300 milliseconds is
the maximum delay...

47 Chapter 4 - MultiVOIP Software
Changing the Phone Directory Database
The MultiVOIP provides two phone directory database architectures; the propreitary database and a
database using an H.323 protocol gatekeeper that provides a centralized call control center. The
proprietary database can only be used when all the end points in the VOIP network are Multi-Tech
VOIP products.  The gatekeeper centralized call control center contains the phone directory database
when all VOIP gateways and endpoints support...

48 Chapter 4 - MultiVOIP Software
If the Proprietary PhoneBook option is enabled, the Database Type group is active which defines
the Master and Slave relationship.  If the database type is master, then the Add, Delete, Edit, Hunt,
and Print buttons at the top of the database dialog box are active.  This allows the master database
to build the phone directory.  You can click Slave Status to view the status of the slave units.
The Add/Edit Phone Entry dialog box for the Proprietary PhoneBook is used to...

49 Chapter 4 - MultiVOIP Software
Description window is like names in a local telephone book listing.  It identifies the calling party.  The
voice channel window defines the voice channel associated with the telephone.
The Station Identification group enables you to assign the entry to a Hunt Group, provide the IP
Address of the MultiVOIP being assigned the phone number, and accept the H.323 industry standard
Port number.  A Hunt Group is a series of telephone lines organized in such a way that if the...

50 Chapter 4 - MultiVOIP Software
Gatekeeper Phone Directory Database
With the Gatekeeper Phone Directory Database, the Gatekeeper acts as the central point for all
calls within its zone and provides call control services to registered endpoints. The Gatekeeper
performs address translation from LAN aliases to IP addresses and provides bandwidth management
where the network manager has specified a threshold for the number of simultaneous calls on the
LAN.  The H.323 ID is an alias.  The Gatekeeper may use...