Dialogic Gateway DMG4120DTI - Quad T1/E1

The DMG4120DTI is a “hybrid gateway” designed for Office Communications Server 2007, a media server role that is Microsoft's technology providing PSTN and PBX interoperability, high-fidelity VoIP, and security.

The Dialogic® 4000 Media Gateway Series (DMG4000 Gateways) is a suite of embedded 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 Office Communications Server 2007 and therefore include the role of Mediation Server, which is Microsoft's technology interoperability, High-Fidelity VoIP, and security.

The DMG4000 Gateways has a familiar user interface, which minimizes Total Cost of Ownership (TCO) reducing the need for operational and administrative training and special maintenance. When solving, DMG4000 Gateways will copy the device numbers required to support Office Communications Server 2007, so that the minimum integration of Mediation Server to the Gateway changes hardware maintenance.

The DMG4000 Gateways consist of Dialogic® Diva® field protection boards and Dialogic® Diva® SIPcontrol™ Software in addition to Mediation Server software. These elements include the compact 1U Intel IP Network Server NSW1U, which features a high-end 64-bit Dual-Core Intel Xeon processor 5100 series, resulting in a system that can be installed in a standard data center. The DMG4000 Gateways also include 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 120 channels of unified communications traffic between legacy networks and a IP network hosting Office Communications Server 2007.

Features & Benefits :

Dependent on Microsoft as a connection between legacy PBXs or PSTN and Office Communications Server 2007
Available unified communications features for circuit-switched telephony network

Available as 1U rack mount integrated system supporting configurations of 48/60 channels (T1/E1) or 96/120 channels (T1/E1)
Offers a range of products densities for businesses of various sizes

Hosts co-located Mediation Server, as an element of the Office Communications Server 2007 solution
Reducing the number of servers is required for a unified communications solution and minimizes administrative effort, resulting in lower TCO

Excellent with equipment for popular PBX designers including Aastra, Alcatel-Lucent, Avaya, Ericsson, Matra, Nortel, and Siemens
Protection investment in legacy telecommunications equipment and allows phased migration to IP

Includes redundant power supply, Raid-1 hard disk subsystem, and failover and load balancing Ethernet network connection
Provides high availability

Additional services for ETSI-DSS1, QSIG, and other TDM protocols
Brings important service delivery services, such as call, travel, MWI, and service information, to the IP ecology.

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

Ports per unit
Dialogic® DMG4060DTI Media Gateway: 2-port T1/E1 (48/60 channels)
Dialogic® DMG4120DTI Media Gateway: 4-port T1/E1 (96/120 channels)

Network interface
2 x 10/100/1000 BaseT Ethernet LAN port with load balancing

Protocol support
- E1 ISDN: ETSI-DSS1 (EuroISDN), INS-1500 (Japan), QSIG
- E1 CAS: MFR2
- T1 ISDN: NI-1, 4ESS, 5ESS, DMS100, QSIG
- T1 CAS: RBS

VoIP call control
- Session Initiation Protocol (SIP), RFC 3261
- Configuration transport apparatus 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
- Service Number (abstracted as Called Party Number, Calling Party Number/CLIP, and Redirecting Number)
- Call hold/retrieve
- Call diversion
- Incorrect, blind transfer
- Related transfer with consulting call
- Message waiting activation/deactivation

FoIP services (depending on installed Fax license)
- Default: 12 channels 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, α-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)