Specifications

OfficeServ 500 General Description Guide/Ed.00 CHAPTER 2. Hardware Descriptions

3.1.6 4 BRI (Basic Rate Interface-4BRI)

The 4 BRI card supports 4 trunk or station level ISDN Basic Rate Interface(e.g., 2B

plus D) circuits. The 4BRI can be inserted in any universal slot.

3.1.7 ITM3 (IP Telephony Module)

The ITM3 card supports 8 VOIP channels with provision for a daughter board

hosting a further 8 channels for a maximum of 16 channels per ITM3 card.

These channels are H.323 compliant and are used in conjunction with either the

G.723 or G.729 voice compression protocols. The ITM3 card may be installed in any

universal card slot.

MGI3 Card

The MGI3 card supports the VoIP Gateway, which enables telephone calls through

the Internet.

When mounted with the ITM3D board, the MGI3 card can support up to 16 Internet

telephone(VoIP) ports by adding 8 channels of Internet telephone ports.

The main features and characteristics of the MGI3 card are summarized below.

Flash memory and data memory basically mounted for program

Echo cancellation function supported preventing echo sounds

Silence suppression function supported preventing data transfer on the network

for the brief silent intervals between words during calls.

Supports G.711, G.723.1(6.3 k) and G.729A for Audio CODEC

Supports T.38 regarding Fax

MGI1/MGI2 Card

The MGI card supports the VoIP Gateway, which enables telephone calls through the

Internet. The MGI1 card serves as a gateway, which connects calls between the

legacy terminal(SLI/DLI) and the IP terminal(IP phone), and provides the Internet

telephone(VoIP) port with 16 channels.

The MGI2 card supports calls connecting to a Remote System station, IP phones for

telecommuting, or to the central office, and provides the Internet telephone(VoIP)

port with 16 channels.

There are two types of MGI card, the MGI1 card and the MGI2 card, which were

classified by their serviceable ranges.

The main features and characteristics of the MGI card are summarized below.

Flash memory and data memory basically mounted for program

Echo cancellation function supported preventing echo sounds

Silence suppression function supported preventing data transfer on the network

for the brief silent intervals between words during calls.

MGI1 : Supports G.711

MGI2 : Supports G.711 and G.729

Echo Cancellation : 64ms(ITU-T G.165, G.168)