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Dialogic

I-Gate

IP Telephony Media Gateways

Static Trunking in Satellite and Radio Link Applications

The high-compression techniques and voice quality protection mechanisms of I-Gate 4000 Media Gateways enable a cost-effective solution

for satellite and radio link routes over TDM or IP links. A static trunking solution with I-Gate 4000 Gateways can be deployed either in a single-

route point-to-point configuration, or in a point-to-multipoint configuration (supporting multiple bearer links), thus handling traffic to multiple

destinations. See Figure 3 for an example. Furthermore, the smart End-to-End Compression feature of the I-Gate 4000 Media Gateways can

contribute to additional CAPEX and OPEX savings in applications encompassing call paths through several compression and decompression

segments (hops).

As the I-Gate 4000 Media Gateways support an in-band management feature, management traffic can be carried through the same bearer link

that interconnects two distant sites, thus allowing the operator to manage remote I-Gate 4000 Media Gateways from a central (hub) site, without

separate management links.

In addition, the embedded cross-connect feature, which supports any-to-any cross-connection between E1/T1 64 kbps DS0 channels, allows

operators to reduce overall expenses in applications requiring interconnection to multiple narrow bandwidth (thin-route) satellite links and in

ring-topology microwave applications including drop/insert nodes.

I-Gate 4000 PRO or I-Gate 4000 EDGE

TDM or IP

Satellite

modem

Figure 3. Satellite Static Trunking

Softswitch-Based Packet Toll/Tandem and Other Services

I-Gate 4000 Media Gateways can be controlled by a softswitch using MGCP, H.248/Megaco, or SIGTRAN. Through standards support, the I-Gate

4000 Media Gateways enable carriers to deploy next-generation VoIP switching solutions for applications such as domestic and international

long-distance services, wireline or wireless network tandem switching, Class 4 switch replacement, and PRI trunking. See Figure 4 for examples

of VoIP switching applications.

Dialogic

I-Gate

4000

PSTN or

PRO Media Gateway

MSC Switch

PSTN or

I-Gate 4000 EDGE

MSC Switch

Figure 4. VoIP Switching Applications

4000 Media Gateways

Satellite

Switch

TDM trunks

STP

MGCP / H.248

IP Backbone

PSTN or

MSC Switch

Satellite

modem

I-Gate 4000 PRO or I-Gate 4000 EDGE

TDM or IP

Satellite

modem

Third-Party Softswitch or

SS7

Dialogic

ControlSwitch

MGCP / H.248

I-Gate 4000 EDGE

Datasheet

Dialogic

I-Gate

4000 PRO Media Gateway or

Dialogic

I-Gate

4000 EDGE Media Gateway

TDM or IP

TDM trunks

System

™

Dialogic

I-Gate

EDGE Media Gateway

I-Gate 4000 PRO

PSTN or

MSC Switch

Switch

4000

PSTN or

MSC Switch