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The Dialogic® 4000 Media Gateway Series (DMG4000 Gateways) is a set of
integrated systems designed to connect Microsoft® Office Communications
Server 2007 to existing PBX systems and PSTN networks. Based on a
standard rack-mount server running the Windows® Server 2003 R2
operating system, the DMG4000 Gateways are basic hybrid media gateways
designed for the Office Communications Server 2007 and therefore
include the role of Mediation Server, which is Microsoft’s technology
providing PSTN and PBX interoperability, high-fidelity VoIP, and
security.
The DMG4000 Gateways have a familiar user interface, which minimizes
Total Cost of Ownership (TCO) by reducing the need for operational and
administrative training and special
maintenance. In addition, the DMG4000 Gateways keep the number of
devices needed to support Office Communications Server 2007 to a
minimum by integrating the Mediation Server into a gateway, reducing
hardware maintenance.
The DMG4000 Gateways contain field-proven Dialogic® Diva® boards and
Dialogic® Diva® SIPcontrol™ Software in addition to Mediation Server
software. These elements are integrated in a rugged, compact 1U Intel
IP Network Server NSW1U, which features a high-performance 64-bit
Dual-Core Intel Xeon processor 5100 series, resulting in a system that
can be installed easily in a standard data center rack. The DMG4000
Gateways also offer dual Gigabit Ethernet interfaces for IP network
connection, as well as a choice of two or four T1/E1 interfaces to the
PSTN or PBX. They can be configured to support up to 120 channels of
unified communications traffic between legacy networks and an IP
network hosting Office Communications Server 2007.
Features &
Benefits:
Validated by Microsoft as
an interconnect between legacy PBXs or the PSTN and the Office
Communications Server 2007
Enables unified communications features for a circuit-switched
telephony network
Available as a 1U rack
mount integrated system supporting configurations of 48/60 channels
(T1/E1) or 96/120 channels (T1/E1)
Offers a range of product densities for businesses of various sizes
Hosts co-located
Mediation Server, an element of the Office Communications Server 2007
solution
Reduces the number of servers needed for a unified communications
solution and minimizes administrative effort, resulting in lower TCO
Compatible with the
equipment of popular PBX manufacturers, including Aastra,
Alcatel-Lucent, Avaya, Ericsson, Matra, Nortel, and Siemens
Protects investment in legacy telecommunications equipment and allows a
phased migration to IP
Includes redundant power
supply, Raid-1 hard disk subsystem, and a failover and load balancing
Ethernet network connection
Provides high availability
Supports supplementary
services on ETSI-DSS1, QSIG, and other TDM protocols
Brings important supplementary services, such as call transfer, call
hold, MWI, and call party information, to an IP environment
Supports T.30 Fax Group 3
up to 33.6 kbps (depending on installed license) using T.38 real-time
FoIP
Offers a range of fax configurations to address demands regarding fax
channel density and fax transmission speed
VoIP call control
- Session Initiation Protocol (SIP), RFC 3261
- Configurable transport layer for SIP, UDP, and TCP
- Session Description Protocol (SDP), RFC 2327
- NOTIFY (RFC 3265), REFER (RFC 3515), 302 REDIRECT, DIVERSION HEADER
- Basic call with far-end and near-end disconnect
- Microsoft® SIP extensions, compatible with both Microsoft® Exchange
UM and
- Microsoft® Office Communications Server 2007
Supplementary services
- Numbering services (abstracted as Called Party Number, Calling Party
Number/CLIP, and Redirecting Number)
- Call hold/retrieve
- Call diversion
- Unattended, blind transfer
- Attended transfer with consultation call
- Message waiting activation/deactivation
FoIP services (depending
on installed Fax license)
- Default: 12 channel of V.17 fax (14.4 kbps)
- Optional: Up to 120 channel of V.34 fax (33.6 kbps)
- T.30 Fax Group 3 up to 33.6 kbps using T.38 real-time FoIP
- Fax compression MH, MR, MMR
- Error Correction Mode (ECM)
- Clear Channel Fax
Tone processing features
- DTMF generation and recognition (in-band)
- DTMF relay, RFC 2833
Media streaming
- IP Real-time Transport Protocol (RTP)
- RTP dynamic payload audio/telephony event
- RTP profile name RTP/AVP
- TDM-side fax tone detection via RTP event (RFC 2833)
- Echo canceller with up to 256 ms echo tail
- G.711 coder, 64 kbps (64 kbps, A-law, μ-law)
Physical dimensions
Height: 1.70 in. (4.32 cm)
Width: 16.93 in. (43.0 cm)
Length: 20.0 in. (50.8 cm)
Power supply
- 90 VAC to 264 VAC
- 450 W
- Power Factor Corrected (EN61000-3-2)
- Two (2) redundant power supplies included
Mediation Server
- Globally Routable User Agents URI
- SIP over mutual TLS
- SRTP on Communications Server
- RT Audio on Communications Server
- Interactive Connectivity Establishment (ICE) support
