Dialogic® DSI SS7 Stack

SS7 Protocols
SS7 Protocol Stacks
for Versatile Service Creation
Proven Signaling System 7 (SS7) protocol implementations for use within high performance products.

Dialogic® DSI SS7 Stack supports a wide range of SS7 capabilities to manage signaling traffic between applications and SS7 networks over TDM or IP.

Use with DSI SS7 Boards or DSI SIGTRAN Stack to build scalable systems for Prepaid, Roaming, SMS, USSD Services, Location Based Services, Call Control etc.

The DSI Development Package available here now includes a set of Java classes providing functionality for use in a Java environment.


Signaling Software

Product Description

(Signaling Connection Control Part class 0,1,2)  ITU-T recommendations Q.711-Q.714, Q.791 and ANSI T1.112


(Transaction Capabilities Application Part)  ITU-T Q.771-Q.774 and ANSI T1.114 


(Intelligent Networking) ITU CS1, ETSI CS1 & CS2 and GR-1299-CORE AIN


 ANSI/TIA/EIA-41.5-D, Wireless Intelligent Networking (WIN) extensions ANSI/TIA/EIA-751, ANSI/TIA/EIA-764, ANSI/TIA/EIA-771, ANSI/TIA/EIA-826 [Prepaid]


CAMEL Application Part specifications v1-v4


(Mobile Application Part)  GSM TS 09.02, TS 29.002


(Message Transfer Part) as defined by the ITU-T, ANSI. 


(ISDN User Part) ITU-T Q.761-Q.764, Q.767, ETS 300 356-1, ANSI T1.113, national variants including German ISUP, Japanese TTC ISUP.


(Bearer Independent Call Control)  Q.1902.1 – Q1902.5, Q.765.5, Signalling Transport Converter Q.1901

Product Highlights
APIs address complete message content to enable unrestricted service creation
Common API for SS7 and SIGTRAN protocols to aid migration of services from TDM to IP carrier networks, e.g. MTP3 to M3UA
Support for industry standards as well as many country variations
Distributed execution of protocol layers to facilitate scaling and performance tuning by adding or load-balancing processing components without application changes
Proven track record of deployment
DSI Protocol Stacks are supported for several Solaris, Linux, and Windows operating systems, including:
   - Solaris: Solaris 9, Solaris 10 (64 and 32 bit)
   - Linux: Red Hat 9, RH enterprise server, MontaVista, SUSE, and others 
   - Windows: Windows Server 2008 R2, Windows 7, Windows Vista

Data Sheets

  • Dialogic® Distributed Signaling Interface (DSI) Protocol Stacks support a range of Signaling System 7 (SS7) and IETF SIGTRAN specifications to provide solid building blocks for the most advanced applications.

Application Notes


Case Study

  • With its CAMEL IWF (InterWorking Function) Gateway, JSC Ingenium is allowing CELL C, the third largest mobile operator in South Africa, to integrate exciting next-generation SIP-based value-added mobile services into its conventional SS7 network. JSC Ingenium uses Dialogic® Distributed Signaling Interface (DSI) Components for signaling, switching, and transcoding in its CAMEL IWF Gateway and other solutions because DSI Components help to make these solutions easy to deploy, interoperable with TDM or IP, and very scalable.
  • Etisalat Sri Lanka understands both the challenges and the importance of providing unique and sustainable roaming services to attract customers, whether inbound or outbound. Because quality and user satisfaction are top criteria, Etisalat Sri Lanka chose three of Globitel's Roaming Solutions (Feel@Home, RoamSalute, and Intelligent Traffic Steering) because they aim to provide high levels of reliability and interactivity. These services also encourage roamer loyalty with superior quality and a user-specific interface that easily promotes SMS and data usage while allowing insight into roamer behaviors and service usability tracking.

  • Pharos Avantgard SMS System V is a high-volume SMS solution that is built on Dialogic® Distributed Signaling Interface Components, including high-density signaling boards and signaling stacks

  • mCarbon has deployed a sophisticated call management service for major carriers in India using its GreenRoom framework and Dialogic® products for call control, signaling, and media.
  • SNT Multiconnect chose ConverCom's Carrier Service Factory, which combines the benefits of conventional SS7 technology with those of open systems by using Dialogic® components and the carrier-grade integration of Envox multi-channel communications functionality in its move to a more flexible network.
  • Color Ring Back Tone (CRBT) has replaced the monotonous ring tones of the past with pleasing music, warm greetings, and interesting advertising. CRBT can not only reflect the unique personality of the caller but also provide a pleasurable experience for the person called, adding variety and enjoyment to a simple communications process. 
  • GloBul, the second-largest wireless operator in Bulgaria, has added a new service to help its customers handle missed calls. The new service, known as Call Notify, was built on the JN Missed Call Notification (MCN) system from Bulgarian telecom solution supplier Applicata, and was based on a fully redundant SS7 configuration from Dialogic.
  • Telecom equipment manufacturers (TEMs) and service providers are searching for ways to generate revenue from new services. Applications utilizing enabling short message service (SMS) can be an ideal way for these businesses to increase income without making a major infrastructure investment.

White Paper

Use the Purchase page linked below to find partners to purchase Dialogic products. The order codes below are for your reference when making a purchase.

Where to Buy

ProductOrder CodeDescription
SS7SBHSTMTP3 852-875 MTP3 Protocol Layer host license
SS7SBHSTISUP 852-876 ISUP Protocol Layer host license
SS7SBHSTTUP 852-886 TUP Protocol Layer host license
SS7SBHSTBICC 884-569 BICC Protocol Layer host license
SS7SBHSTSCCPCL 852-879 SCCP Connectionless Protocol Layer host license
SS7SBHSTSCCPCO 852-880 SCCP Connection Oriented Host Protocol Layer host license
SS7SBHSTTCAP 852-881 TCAP Protocol Layer host license
SS7SBHSTMAP 852-878 MAP Protocol Layer host license
SS7SBHSTIS41 852-883 IS-41 Protocol Layer host license
SS7SBHSTINAP 852-884 INAP Protocol Layer host license