Dialogic 1000 Media Gateway Digital PBX Emulation, 8 ports - Avaya, Nortel, NEC, Siemens (DMG1008DNIW)
The Dialogic® 1000 Media Gateway Series (DMG1000 Gateways) allows for a well-planned, phased migration to an IP network, making the gateways a smart solution for enterprises looking to enhance their legacy PBX equipment with new VoIP access and applications. Connected between a PBX or a digital handset and a LAN or WAN, the DMG1000 Gateways convert proprietary digital PBX messages into a format suitable for transmission over standard IP networks.
The Dialogic 1000 is a Microsoft Lync compatible gateway.
Features
Suitable for small to medium enterprises and easy to install, configure, and maintain
Compatible with a variety of popular PBX manufacturers including Alcatel, Avaya, Ericsson, Fujitsu, Mitel, NEC, Nortel, and Siemens
Designed, developed, and tested in Dialogic’s state-of-the-art PBX lab and optimized for use in an Enterprise environment
Support for IP load balancing and IP fault tolerance
Seamless interoperability with Dialogic® HMP Software
Supports configuration via serial, telnet, and a web browser including context-sensitive help
IP security features include TLS, SRTP, and HTTPS
Benefit
Protects investment in legacy telecommunications equipment and allows a controlled migration to IP technology
Ideally suited for Enterprise Unified Messaging applications (tested and certified with Microsoft® Exchange Server UM)
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
Provides the options for customers to build enhanced applications on top of base gateway and PBX functions
Easy to install, configure, debug, and maintain
Enables secure communications for SIP messages via TLS,for media stream via SRTP, and for web interface via HTTPS
Applications
Centralized VoIP and FoIP application servers, including IP-based voice mail and unified messaging
IVR and announcements
IP PBX
VoIP extension to branch offices
Contact centers
Functional Description
The DMG1000 Gateways each contain eight digital PBX emulation interfaces and a 10/100 BaseT Ethernet connection for connecting to a LAN. An analog loop start unit designed for voice mail and unified messaging applications is also available to connect to PBXs that do not have an appropriate digital interface. The analog loop start unit supports integration via in-band signaling (DTMF or FSK) or serial protocols (SMDI, MCI, and MD-110).
The DMG1000 Gateways provide a simple, cost-effective transition to voice and data convergence for enterprises with PBXs. Connected externally, they offer an IP solution that works with current legacy equipment. They support SIP-based applications as well as T.38 for fax transmissions over IP (FoIP).
Gateway unit features include:
Voice over Internet Protocol (VoIP) – Supports SIP per RFC 3261. Uses Real-time Transport Protocol/Real-Time Control Protocol (RTP/RTCP) for delivery of voice over the LAN or WAN
IP security — Supports TLS for SIP messages, SRTP for media stream, and HTTPS for web interface
Enhanced voice processing – Supports a variety of compression algorithms, including G.711 A-law and µ-law, G.723.1, and G.729AB
T.38 Fax over Internet Protocol (FoIP) – Emulation units transcode fax from T.30 fax protocol, supporting V.17, V.21, V.27, and V.29 modulation schemes, to T.38 for transmission over a packet network
Hot swap – Allows gateway units to be added or removed without affecting other gateway units
Web server interface – Each gateway unit is delivered with a web server interface, allowing configuration and software upgrades via a web browser
Configuration
The DMG1000 Gateways can be used to connect IP telephones to a legacy PBX, integrate network-hosted applications with the PBX, extend the PBX to branch offices, and integrate various voice and call processing capabilities in an enterprise LAN or WAN environment. Using exclusive PBX network interfaces (emulating), these media gateway appliances provide exceptional IP to PBX integration capabilities to protect an investment in legacy telecom equipment.
Figures 1 and 2 provide sample configurations.
Figure 1. IP-Enabled PBX in Communication with SIP Devices over a LAN
Figure 2. IP-Enabled PBX in Communication with SIP Devices at a Branch Office over a WAN
Call Routing
The DMG1000 Gateways route calls from the switched network to a VoIP destination on the IP network. Conversely, it routes calls from the IP network through a switch port to a destination telephone number on the switched network. The DMG1000 Gateways support the following call routing options:
User-configurable list of VoIP servers
IP load balancing
IP fault tolerance
TDM-to-TDM
Figure 3. DMG1000 Gateways Front Panel
Physical Description
Figure 3 shows the LEDs on the front panel, which reflects the status of the unit, Ethernet, and PBX telephony ports.
Ready – Shows overall unit status
Link – Shows the unit’s Ethernet status
Data – Shows the unit’s Ethernet RTP activity
Port Status 1–8 – Shows the unit’s PBX link status for each TDM port
Figure 4. DMG1000 Gateways Rear Panel
The back panel (Figure 4) contains both interfaces and indicators.
Interfaces
DC power
Serial port for diagnostics or serial protocol support
4 or 8 telephony portsEthernet port
Reset switch
Status Indicators
10/100BaseT
Full/half duplex
RX/TX traffic
Ethernet link state
Ethernet collision
Technical Specification
PBX Interface Number of ports 4 and 8 port analog units, and 8 port Digital PBX emulation units, Use multiple gateway units for higher port counts
Connectors 8 shielded female RJ-45 jacks
Network Interface
10/100 Base-T Ethernet LAN portConnector, 1 shielded female RJ-45 jack for LAN
VoIP Protocols
SIP per RFC 3261
RTP/RTCP for delivery of voice
FoIP Protocol
T.38 FoIP
Emulation units transcode fax from T.30 fax protocol, supporting V.17, V.21, V.27, and V.29 modulation schemes, to T.38 for transmission over a packet network
Voice Support
G.711 µ-Law and A-Law, G.723.1, G.729AB
Silence suppression with comfort noise
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
Configuration and Management
SNMP v1 Read-only for alarm reporting
Web GUI With context-sensitive Help facility
TelnetBOOTP client and TFTP client Built-in
Call Routing
User configuration list of VoIP endpoints
IP load balancing
IP fault tolerance
Supports configuration of a backup SIP proxy server
IP Security
TLS for SIP messages
SRTP for media stream
HTTPS for web interface
Power Requirements
Line voltage 90 VAC to 264 VAC
Frequency 47 Hz to 63 Hz
Physical Dimensions
Length 10 in. (25.4 cm)
Width 9.5 in. (24.1 cm)
Height 2.1 in. (5.3 cm)
Weight Approximately 2.5 lbs. (1.13 kg)
Environmental Requirements
Operating temperature 32ºF to 122ºF (0ºC to 40ºC)
Non-operating temperature –4ºF to 158ºF (–20ºC to 70ºC)
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