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The Dialogic® 2000 Media Gateway Series (DMG2000 Gateways) is a set of
turnkey appliances that seamlessly merge traditional PSTN technology
with IP networks. These economical gateways help
consolidate typically separate voice and data networks and provide new
and differentiated communication services. Without making
radical, disruptive, and expensive upgrades to existing PBX equipment,
service providers and enterprises can realize the benefits
of a converged voice and data network with these gateways.
Features &
Benefits:
Provides an interconnect
between legacy PBXs and various IP endpoints
Enables communication between a circuit-switched telephony network and
Session Initiated Protocol (SIP) compatible remote devices such as IP
voice mail, unified messaging applications, and IP phones
Available in single,
dual, and quad density T1/E1 rack mount appliances
Offers a range of product densities to fit the needs of a variety of
applications and business sizes
Compatible with a variety
of popular PBX manufacturers including Avaya, Mitel, NEC, Nortel, and
Siemens
Protects investment in legacy telecommunications equipment and allows a
phased migration to IP
Support for IP load
balancing and IP fault tolerance
Allows the ability for inbound (TDM-to-IP) calls to round-robin between
available media servers and automatically routes calls away from
unresponsive media or proxy servers
Supports supplementary
services on CAS, QSIG, Euro ISDN, NI2, DMS100, 5ESS protocols, enabling
call transfer, call hold, MWI, and call party information
Helps retain key supplementary services in the new IP environment
Seamless interoperability
with Dialogic® Host Media Processing (HMP) Software
Provides the option for customers to build enhanced applications on top
of base gateway and PBX functions, and make those applications
available on legacy handsets
Supports configuration
via serial, telnet, and a web browser including context-sensitive Help
Easy to install, configure, debug, and maintain
IP security features
include TLS, SRTP, and HTTPS
Enables secure communications for SIP messages via TLS, for media
stream via SRTP, and for web interface via HTTPS
The DMG2000 Gateways can be installed and configured “plug and play,”
reducing the total cost of ownership. Operations, Administration, and
Maintenance (OA&M) features such as network alarm events,
remote management enabled by a userfriendly web interface along with
advanced diagnostics and administration tools make the installation and
maintenance of these appliances quick and easy.
The cost of the DMG2000 Gateways makes them a unique and ideal solution
for enterprises interested in deploying a variety of applications such
as PBX extension, remote office connectivity, long-distance
consolidation, call centers, and IP media servers. Available in a
19-inch standard rack mountable chassis, these appliances are also
ideal for service providers offering hosted IP-PBX, IP Centrex, and
enhanced messaging servers.
Save Time, Money — and
Existing PBX Equipment
A large base of enterprises today have legacy PBX equipment installed
in their premises. These enterprises want to cut their communications
costs by implementing a VoIP solution, but wish to retain their
investment in legacy equipment. Because these enterprises have a
diverse base of PBX equipment, solution providers need a product that
will help them address this wide customer
base with a single, simple solution.
The DMG2000 Gateways have been tested for interoperability with legacy
PBXs from vendors such as Alcatel, Avaya, Mitel, NEC, Nortel, and
Siemens. This testing lets solution providers focus on customer
applications rather than integration efforts with legacy PBXs. In
addition to providing IP connectivity, the DMG2000 Gateways support key
supplementary services such as call transfer, call forwarding, call
hold, message waiting indicator (MWI), and call party information on
most T-1/E-1 protocols including CAS, QSIG, Euro ISDN, NI2, DMS100, and
5ESS, enabling customers to retain application- critical PBX
functionality in the new VoIP environment.
Advanced Voice Features
Provide Superior Caller Experience
The extensive features of the DMG2000 Gateways can help build a
reliable, high-quality VoIP application. The gateways provide the
interoperability needed for high-quality media streaming with a wide
variety of industry-standard IP endpoints by supporting advanced coders
including:
G.711 (packet size 10 ms, 20 ms, and 30 ms)
G.723.1
G.729ab
Echo cancellation is essential for packet-switched networks to carry
voice traffic successfully. The DMG2000 Gateways conform to ITU G.168
echo cancellation with a tail length up to 128 ms. Voice quality is
further enhanced with features such as comfort noise generation,
silence detection, and adaptive jitter buffering.
The DMG2000 Gateways have QoS features, including type of service
(TOS)/IP precedence, and DiffServ, providing a low-latency,
high-reliability path for sensitive voice traffic through today’s
networks. In addition, the gateways support advanced call progress
analysis on all channels.
TDM
Port Density by Model DMG2030DTI:
1 T1 or 1 E1 DMG2060DTI:
2 T1 or 2 E1 DMG2120DTI:
4 T1 or 4 E1
IP
Channel Density by Model DMG2030DTI:
30 DMG2060DTI:
60 DMG2120DTI:
120
Connectors:
RJ-45 jacks
Network Interfaces:
10/100 BaseT Ethernet LAN port
Connector 1 shielded female RJ-45 jack for LAN
Configuration and
Management
- Web browser with context-sensitive Help facility
- Telnet
- BOOTP client and TFTP client built-in
- SNMP v1 read-only for alarm reporting
Call Routing
- Round Robin via IP load balancing
IP Security
- TLS for SIP messages
- SRTP for media stream
- HTTPS for web interface
Power
Requirements Line voltage: 90VAC
to 264VAC Frequency:
47 Hz to 63 Hz
Physical
Dimensions Height 1.68
in. (4.27 cm) Width 19 in.
(48.26 cm) Length 14.2
in. (36.07 cm) Weight 11.1
lbs (5.03 kg)
Environmental
Requirements Operating temperature
+32°F to +122°F (0°C to 40°C) Storage temperature
–4°F to +158°F (–20°C to 70°C)
Protocol
Support Serial -
MCI, MD-110, SMDI T-1 ISDN -
5ESS, DMS100, NI2, QSIG T-1 CAS -
E&M, GroundStart, LoopStart E-1 -
EuroISDN, QSIG VoIP - Call
transfer/call hold/message waiting indicator), SIP per RFC 3261,
RTP/RTCP for delivery of voice FoIP -
T.38 FoIP emulating units transcode fax from T.30 fax protocol,
supporting V.21, V.27, V.29, and V.17 modulation schemes to
T.38 for transmission over a packet network Security
- SRTP, HTTPS, TLS
Voice
Support
G.711 μ-law and A-law
G.723.1
G.729ab
Silence suppression with comfort noise
Dynamic jitter buffer
G.168 automatic echo cancellation
Call Progress Analysis (CPA), including Positive Voice Detection,
Positive Answering
Machine Detection (PAMD), DTMF detection, and fax tone detection
Quality
of Service
Type of service (ToS)/IP precedence
DiffServ
