Dialogic
®
I-Gate
®
4000 Media Gateways
IP Telephony Media Gateways
Datasheet
4
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.
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.
Figure 4. VoIP Switching Applications
Satellite
Switch
TDM trunks
Satellite
modem
TDM or IP
Dialogic
®
I-Gate
®
4000 PRO Media Gateway or
Dialogic
®
I-Gate
®
4000 EDGE Media Gateway
Switch
TDM trunks
Satellite
modem
TDM or IP
I-Gate 4000 PRO or I-Gate 4000 EDGE
Switch
TDM trunks
Satellite
modem
TDM or IP
I-Gate 4000 PRO or I-Gate 4000 EDGE
Sa
m
PSTN or
MSC Switch
PSTN or
MSC Switch
SS7
MGCP / H.248
MGCP / H.248
IP Backbone
Dialogic
®
I-Gate
®
4000
EDGE Media Gateway
PSTN or
MSC Switch
I-Gate 4000 EDGE
Dialogic
®
I-Gate
®
4000
PRO Media Gateway
STP
Third-Party Softswitch or
Dialogic
®
ControlSwitch
™
System
PSTN or
MSC Switch
I-Gate 4000 PRO
PSTN or
MSC Switch
I-Gate 4000 EDGE
