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Dialogic IMG 1004 Integrated Media Gateway
Integrated gateway solutions to enable connections between networks, services and subscribers with ease and scale

Dialogic IMG 1004 Integrated Media Gateway

Dialogic Products
Media Gateways
Dialogic IMG 1004 Integrated Media Gateway
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The Dialogic IMG 1004 Integrated Media Gateway is a carrier-ready VoIP gateway that supports both media and signaling in a single chassis. It allows service providers to add new telephony services quickly, and gives them a clear migration path to an all-IP network. The IMG 1004 brings the value proposition of an integrated media gateway into the low-density (1-4 span) gateway market.

The IMG 1004 provides any-to-any voice network connectivity and can work in tandem with Dialogic’s IMG 1010 to deliver SIP services into legacy SS7, PRI, and CAS networks, as well as IP-to-IP transcoding and multimedia border element functions, such as SIP mediation for network edge applications. Its compact 1U design, integrated SS7 links termination and CICs, GUI-based management, and software licensing for in-service capacity expansion make the IMG 1004 an excellent option for VoIP.

The IMG 1004 also features the Dialogic Programmable Protocol Language (PPL), which allows rapid implementation of ISDN PRI variants and other signaling changes.

Features and Benefits:

Features Benefits
Simultaneous support for PRI, CAS, and SS7 signaling, along with SIP and H.323 Provides a flexible, cost-effective platform that can evolve from TDM-IP to all IP
SS7 signaling, call routing, call translation, and IP transcoding supported in a single chassis Can reduce complexity and administrative overhead for VoIP services, and allows on-the-fly voice coder conversion
Supports multimedia border element capabilities, including SIP mediation, topology hiding, and media transcoding. Facilitates efficient operations between incompatible network elements in a service provider infrastructure
Supports up to 128 channels in a 1U chassis Allows easy scalability to 128 channels in a small footprint
Wireline and wireless support, including ENUM and DNS Enables fast connection time and lower phone charges because callers can connect to each other directly without using the PSTN
Carrier-ready design uses dual Ethernet network interfaces Provides high reliability and service availability
Works with load balancers Optimizes distribution of SIP traffic and improves scalability and fault tolerance


Technical Specifications
Routing Features
  • Call routing and translation based on ANI, DNIS, Generic Number (call routing only supported), and Nature of Address (NOA), Time of Day, Day of Week/Year
  • 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, iLBC, G.711, G.723.1, G.729 A/B, G.729 E/G, GSM-FR, G.726, RFC 4040 clear channel
  • Echo cancellation: G.168 128 ms tail length
  • Voice activity detection
  • Comfort noise generation
  • T.38 Real Time Fax
  • Fax/modem bypass
  • Digit transmission via RFC 2833 (SIP and H.323) or H.245 UII (H.323)
  • Symmetric NAT Traversal
  • Secure RTP media (for SIP)
  • Centralized Element Management System
  • GUI-based system allows monitoring and provisioning of up to 32 gateways
  • Node wizard for simplified configuration
  • 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, DS0, DS1, and DS3
  • Cacti reporting
Power Requirements
AC Power Supply Range 120 - 240 VAC 50/60 Hz with voltage range (90 V to 240 V)
Power consumption 30 W
Physical Specifications
Dimensions 1.72 in. high (43.7 mm)
17.25 in. wide (438.2 mm)
11.00 in. deep (279.0 mm)
Weight 9.1 lb (4.12 kg)
  • Local termination of ISUP links and IP backhaul to IMG 1010 signaling node
  • Redundant Element Management System servers
  • Graceful software upgrade over multiple IMG 1004s
  • Graceful busy out per trunk group
  • Virtual IP addresses for SIP load balancing (via third party server)
  • Call Release due to media inactivity timeouts
  • 32 - 128 TDM channels per 1U shelf (scalable from 1 E1/ 1 T1 to 4 E1 / 4 T1)
  • 32 - 128 VoIP channels per 1U shelf
IP Interfaces
I/O Interfaces
  • Telephony: T1 and E1
  • IP: 2 - Fast Ethernet for control, signaling, and media
  • T1/E1s for timing (BITS clock) and signaling
  • Loop timing via any telephony port
TDM Signaling Protocols
  • ISDN PRI (FAS and NFAS): NI2, Euro ISDN, DMS 250, 5ESS
  • T1/E1 CAS (FGB, FGD and MFR2)
  • Q.699 ISDN to SS7 mapping
  • ISDN UUI mapping to SIP and H.323
  • SS7/C7 ISUP: ITU and ANSI variants supported through the Dialogic Programmable Protocol Language (PPL)
  • SS7 ISUP CICs and Links Termination (connects to SS7 stack on IMG 1010)
  • Up to 8 SS7 links and 128 CICs per IMG 1004
  • ISDN call transfer and bridging via Explicit Call Transfer, Two B Channel Transfer, and Release Link Trunking (initiated via SIP REFER)
  • Delayed ANM for ISUP (triggered by third-party SIP call transfers)
IP Protocols
  • H.323
  • H.323 v2
  • H.323 Keep Alive
SIP and Related Specifications
  • RFC 2246 Transport Layer Security (TLS) for SIP
  • RFC 2327 Session Description Protocol (SDP)
  • RFC 2976 SIP Info for digit transmission (#,*) and interworking DTMF
  • RFC 3204 MIME Media Types for ISUP and QSIG (ISUP only supported)
  • RFC 3261 SIP Basic
  • RFC 3262 SIP PRACK
  • RFC 3263 Locating SIP servers for DNS lookup SRV and A records
  • RFC 3264 SDP Offer/Answer Model
  • RFC 3265 SIP Subscribe/Notify
  • RFC 3311 SIP Update
  • RFC 3323 Privacy Header Field (partial support)
  • RFC 3325 Asserted Identity
  • RFC 3326 SIP Reason Header
  • RFC 3372 SIP for Telephones (SIP-T)
  • RFC 3398 ISUP/SIP Mapping
  • RFC 3515 SIP REFER
  • RFC 3578 ISUP Overlap Signaling to SIP
  • RFC 3581 Symmetric Response Routing
  • RFC 3666 SIP to PSTN Call Flows
  • RFC 3711 SRTP (for SIP)
  • RFC 3725 Third Party Call Control for SIP
  • RFC 3764 ENUM for SIP Address of Record
  • RFC 3891 SIP Replaces Header
  • RFC 3892 SIP Referred-By Mechanism
  • RFC 4028 SIP Session Timer
  • RFC 4244 SIP History info (for call diversion)
  • RFC 4412 Communications Resource Priority for SIP (partial support)
  • RFC 4568 SDP Security Descriptions for Media Streams
  • RFC 4904 SIP tgrp (trunk group) parameter
  • SIP 3xx Gateway Responses and 302 Initiate
  • SIP Diversion Header
  • SIP Trunk Group IDs (OTG, DTG)
  • SIP Coder Negotiation
  • SIP Busy Out
  • ITU-T Q.1912.5 – SIP and ISUP Interworking (includes SIP-I) and Overlap signaling (SIP to SIP ISUP)
  • SIP Mediation (SIP to SIP)
  • SIP to SIP-I/SIP-T
  • Adaptive jitter buffer
  • Packet loss compensation
  • Configurable Type of Service (ToS) fields for packet prioritization and routing
Approvals and Compliance
  • USA/Canada: FCC Part 15, ICES-003
  • European Union: EN55022: 2006/A1:2007, EN55024: 1998/A1:2001/A2:2003, EN 300 386 V1.4.1 (2008)
  • Australia/New Zealand: AS/NZS CISPR 22:2006
  • Japan: VCCI
  • USA/Canada: UL/CSA 60950-1 – 2nd Edition (2007)
  • European Union: EN60950-1:2006
  • Australia/New Zealand: AS/NZS 60950.1:2003
CB Scheme International CB Scheme IEC 60950-1 2nd Edition
Telecom Approvals
  • USA/Canada: FCC Part 68/IC CS-03
  • European Union: TBR 4, 12, 13
  • Australia: AS/ACIF S-016 and AS/ACIF S-038
  • Japan: JATE Green Book
Warranty 1-year
Estimated MTBF per Telcordia Method 1 AC power: 160,627 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 1004 Integrated Media Gateway Datasheet (.PDF)


Dialogic Products
Media Gateways
Dialogic IMG 1004 Integrated Media Gateway
Get a Quote!