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Dialogic IMG 2020 Integrated Media Gateway
Integrated gateway solutions to enable connections between networks, services and subscribers with ease and scale

Dialogic IMG 2020 Integrated Media Gateway

Dialogic Products
Media Gateways
Dialogic IMG 2020 Integrated Media Gateway
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The Dialogic IMG 2020 Integrated Media Gateway connects and secures sessions across IP and mixed network boundaries to support the seamless delivery of services. The IMG 2020 connects IP and hybrid networks via high-density optical, telephony and Ethernet links in a compact 1U form factor appliance. It also transforms media and signaling to support efficient and reliable voice, fax and multimedia sessions for mobile, fixed and cloud-based applications.

The combination of IP multimedia and Time Division Multiplexing (TDM) gateway functionality in a single chassis in the IMG 2020 offers the potential for significant reductions in CAPEX and OPEX when compared to less integrated alternatives.

Along with providing a broad range of session performance scalability in a small footprint, the IMG 2020 handles signaling and media in a single chassis and can deliver SIP services into SS7, SIGTRAN, PRI, and SIP-I networks. The IMG 2020 also provides basic IP session control and security features to help service providers deliver multimedia services with features that include Denial of Service (DOS) protection, IPv6 to IPv4 interworking, SIP mediation, SIP-to-H.323 interworking, SIP back-to-back user agent (B2BUA), SIP trunking support, and IP-to-IP transcoding of voice, mobile HD voice, fax and tones.

The IMG 2020 is part of a line of gateway solutions from Dialogic that help service providers and enterprises energize their networks and services with a better way to interconnect and deliver services through ease-of-use and low total cost of ownership (TCO).

AVAYA DevConnect TestedHigh Density and Versatility

With its high density and versatility, the IMG 2020 can help wireless and wireline service providers add new Value-Added Services (VAS) quickly, and provide a clear migration path to an all-IP network. The IMG 2020 is also an excellent option for retail, wholesale, and enhanced service VoIP deployments, as well as contact centers and mobile VAS.

The IMG 2020 also offers energy efficiency and hardware components where hazardous substances have been minimized, which can help operators and contact centers seeking to fulfill "green" initiatives.

Any-to-Any Signaling and Media Connectivity

The IMG 2020 provides any-to-any network connectivity through its ability to interwork multiple protocols used by telecommunications providers to deliver services to their retail, business and wholesale customers. In addition to providing TDM-to-TDM signaling conversion (SS7 ISUP and ISDN), it can also provide interworking between SS7, SIGTRAN, SIP, H,323 and SIP-T/I formats.

The IMG 2020 also supports any-to-any media transcoding for popular voice and HD voice codecs. T.38 and G.711 fax interworking and support for RTP, in-band and SIP INFO method based tones and event handling complement the media transcoding capabilities to provide a high degree of flexibility to help deliver value added services economically.

Easy-to-use Service Configuration and Management Tools

The Web graphical user interface (WebUI) is a real-time web based GUI used to configure, monitor, and provision the IMG 2020. It allows operators to graphically configure and perform real-time monitoring and provisioning of a single IMG 2020. Configuration changes can be applied to connected nodes with simple point-and-click actions, and high level alarms can be viewed without the need to reference or decode log files. SNMP support includes both standard and private MIBs, enabling customers to integrate statistics into their existing management systems, for example:

  • Performance intelligence such as call reporting by channel group
  • CPU and memory utilization
  • Alarms

Powerful SIP profiling tools on the IMG 2020 allow operators to configure attributes and features needed to communicate with specific external network components and IP endpoints. This allows the IMG 2020 to easily mediate SIP signaling variants between networks that use different types of SIP headers to convey message attributes. The IMG 2020 also features the Dialogic Programmable Protocol Language (PPL), which allows rapid implementation of SS7 ISUP variants and other signaling changes.

Features and Benefits:

Features Benefits
Scalable from 50 to 2250 simultaneous SIP sessions with multimedia transcoding, and 128 to 2016 channels of SS7 signaling Scalable IP and TDM connectivity solution provides high performance in a small footprint to help lower OPEX and CAPEX
Combined IP and TDM gateway features on a single platform Integrated multimedia gateway features facilitate TDM and IP interworking to provide service delivery flexibility and automated failover between domains
Any-to-any signaling and media support Support for SS7, SIP signaling, and IPv6 and IPv4 interworking along with voice transcoding provides a cost-effective platform to help service providers evolve from a TDM to an all-IP environment
SIP profiler and web based user interface Easy-to-use service configuration and management tools can help accelerate service deployment and simplify platform management
Integrated encryption and transcoding support for voice, tones and faxing Eliminates the need to add separate hardware to support both security and transcoding requirements helping to reduce CAPEX and number of platforms deployed
Carrier class solution Carrier class design and features provide high availability, reliable throughput and enhanced service delivery


Technical Specifications
Routing Features
  • Call routing and translation based on ANI, DNIS, Generic Number (only translation is supported), Nature of Address (NOA)
  • Algorithms include percentage-based routing and disposition by Cause Code
  • Pre- and post-routing digit translations with wildcard support
  • Multiple routing algorithms per trunk group or groups of trunks for IP-to-TDM and IP-to-IP and both A-law and µ-law conversions
  • Pre-call announcement (branding)
IP Bearer Features
  • Coder support: AMR-NB, AMR-WB, G.711, G.723.1, G.729 A/B, G.726, G.722, GSM-FR, GSM-EFR, iLBC, RFC 4040 Clear Channel
  • Echo cancellation: G.168 128 ms tail length
  • Voice activity detection and packet loss concealment
  • Comfort noise generation
  • T.38 real-time fax, T.38 – G.711 interworking
  • Fax/modem bypass
  • Digit transmission via RFC 2833 (SIP)
  • G.711 tones, SIP INFO, RFC 2833 interworking
  • Hosted NAT
  • VLAN tagging
  • Secure RTP (SRTP) to RTP interworking (SIP audio media only)
  • Web User Interface (WebUI) supports configuration via browser
  • Dialogic Multi-Node Element Management System — Enables monitoring and provisioning of up to six (6) nodes via web browser
  • Centralized routing engine simultaneously configures gateways in the network Radius (billing, authentication, prepaid)
  • Local time zone support and Network Time Protocol (NTP)
  • SNMP MIBs: MIB-2, Interface, Alarms, Private Call Reporting and System Statistics, Private Alarms, DS0, DS1, DS3, and OC3
Power Requirements
AC Power Supply Range
  • 100 – 132 VAC (115 VAC nominal)
  • 180 – 264 VAC (230 VAC nominal)

Note: AC power supply will operate at frequencies between 47 Hz and 63 Hz

DC Power Supply Range -36 to -60 VDC (-48 VDC nominal)
Power Consumption
No DSP Modules 90 Watts Typical; 120 Watts Maximum
1 DSP Module 110 Watts Typical; 145 Watts Maximum
2 DSP Modules 130 Watts Typical; 170 Watts Maximum
3 DSP Modules 150 Watts Typical; 195 Watts Maximum
4 DSP Modules 170 Watts Typical; 220 Watts Maximum
Operating temperature range 0 to +50 °C, 95% relative humidity non-condensing
Storage temperature range -10 to +75 °C, 95% relative humidity non-condensing
Physical Specifications
Dimensions 1.72 in (43.7 mm) high
16.97 in (431 mm) wide
19.67 in (499.6 mm) deep
Weight 24 lb (10.9 kg)
Field replaceable items
  • Fan filter (available in 10-packs)
  • Power supplies
  • OC-3/STM-1 optical module
  • Motherboard tray
  • Up to four (4) DSP modules
  • SS7 signaling: 1+1 active/standby redundancy
  • Smart IP probing Automated failover (Ethernet links)
  • Failover via automatic protection switching (optical links)
  • Graceful busy out per trunk group
  • Virtual IP addresses for SIP load balancing (via Dialogic PowerVille LB (Load Balancer))
  • Call release due to media inactivity timeouts
  • Dual, hot swappable, AC/DC power supplies
  • 128 - 768 TDM channels per 1U shelf with Rear I/O Type 1 (scalable from 4 E1/5 T1 to 24 E1/T1)
  • 672 - 2016 TDM channels per 1U shelf with Rear I/O Type 2 (supports either Optical 0C3 interface or 3 DS3s)
  • 100 - 4500 VoIP channels per 1U shelf
  • 50 to 2250 VoIP sessions
I/O Interfaces — Rear I/O Type 1 — T1/E1
Telephony — T1 and E1 24 T1/E1 for timing (BITS clock), signaling and bearer traffic (T1 — 100 ohms and E1 — 120 ohms)
Clock Sync Stratum-3 via T1/E1 interface
IP Interfaces
  • Dual redundant 100/1000 Base-T Ethernet for control;
  • 2 - 100/1000 Base-T Ethernet Aux ports (reserved for later use)
WAN IP 4 - 100/1000 Base-T Ethernet for VoIP payload and signaling
I/O Interfaces — Rear I/O Type 2 — High Density
Telephony — T1 and E1, OC3/STM-1, and DS3
  • 1 to 3 DS3 + 4 - T1/E1 for timing (BITS clock), signaling and bearer traffic
  • 1 OC3/STM-1 with Automatic Protection Switching (APS) + 4 T1/E1 for timing (BITS clock), signaling, and bearer traffic (T1 — 100 ohms and E1 — 120 ohms)
Clock Sync Stratum-3 via T1/E1 interface or OC-3/STM-1 interface
IP Interfaces
  • Dual redundant 100/1000 Base-T Ethernet for control;
  • 2 - 100/1000 Base-T Ethernet Aux ports (reserved for later use)
WAN IP 4 - 100/1000 Base-T Ethernet for VoIP payload and signaling (additional 4 reserved for later use)
Optical Transceiver Hot plug LC connector type SFP modules (1310 nm 15 KM)
TDM Signaling Protocols
  • ISDN PRI (FAS and NFAS): NI2, Euro ISDN, DMS 250, 5ESS, JATE/Japan INS-NET1500, ISDN Net 5
  • Q.699 ISDN to SS7 mapping
  • ISDN/SS7 UUI mapping to SIP
  • SS7/C7 ISUP: ITU, ETSI and ANSI variants supported through the Dialogic Programmable Protocol Language (PPL)
  • SS7 TCAP for message-waiting-indication (MWI) and Caller Name (CNAM) service
  • 64 SS7 links in standalone configuration
  • 128 SS7 links in redundant configuration
  • A-links and F-Links supported
  • E1 to DS3 mapping for third-party multiplexor compatibility
  • ISDN call transfer and bridging via Explicit Call Transfer, Two B Channel Transfer, and Release Link Trunking (initiated via SIP REFER)
  • ISUP call transfer and bridging via Explicit Call Transfer (initiated via SIP REFER)
  • Delayed ANM for ISUP (triggered by third-party SIP call transfers)
  • ISDN and ISUP Multilevel Precedence and Preemption (MLPP)
IP Protocols
  • H.323
  • H.323 v2
  • H.323 RAS, H.245, and H.225
  • H.323 Tunneling
  • H.246 Annex C – ISDN User Part Function — H.225.0 Interworking
Core SIP Specifications and Notable Extensions
  • RFC 3261 SIP Basic
  • RFC 3262 SIP PRACK
  • RFC 3263 Locating SIP servers for DNS lookup SRV and A records (partial support)
  • RFC 3264 SDP Offer/Answer Model
  • RFC 3265 SIP Subscribe/Notify
Notable SIP Extensions – Partial List
  • RFC 2246 Transport Layer Security (TLS) for SIP
  • RFC 3372 SIP for Telephones (SIP-T)
  • RFC 3398 ISUP/SIP Mapping
  • RFC 3711 SRTP (for SIP)
  • Tel URI – RFC 3966
  • RFC 6157 – IPV6 Transition in SIP
  • ITU-T Q.1912.5 - IP and ISUP interworking
  • RFC 3332 — M3UA Adaption Layer
  • M3UA Application Server
  • M3UA Signaling Gateway for TCAP/SCCP
  • Adaptive jitter buffer
  • Packet loss compensation
  • Configurable Type of Service (ToS) fields for packet prioritization and routing
Approvals, Compliance, and Warranty
Warranty 1-year
Estimated MTBF per Telcordia Method 1 With Dual Redundant AC or DC Power Supplies
Rear I/O Type 1 — T1/E1
No DSP Modules 148000 hours
1 DSP Module 121000 hours
2 DSP Modules 103000 hours
3 DSP Modules 89000 hours
4 DSP Modules 79000 hours
Rear I/O Type — High Density: DS-3 OC-3 I/O
No DSP Modules 162000 hours
1 DSP Module 130000 hours
2 DSP Modules 109000 hours
3 DSP Modules 94000 hours
4 DSP Modules 83000 hours


Get the IMG that fits your needs. IMG 2020 IMG 1010 IMG 1004
SIP-SS7 Interworking
SIP-SIP-I/T Interworking
Media Transcoding
High Traffic Applications    
Mid to Low Density Applications  


Download the Dialogic IMG 2020 Integrated Media Gateway Datasheet (.PDF)


Dialogic Products
Media Gateways
Dialogic IMG 2020 Integrated Media Gateway
Get a Quote!