Dialogic DSI Signaling Web Services
Based on Dialogic DSI G51 Signaling Controller

Overview:

Web Services Interface for SMS, USSD and Location Based Services

Dialogic DSI Signaling Web Services (DSI SWS) is a scalable, high-performance signaling platform combining connectivity to SS7- and SIGTRAN-based mobile networks with a Web Services API to simplify mobile VAS application development. DSI SWS can enable applications built using standard web services development techniques for SMS Messaging, Unstructured Supplementary Services Data (USSD), and Location Based Services (LBS).

Extends the Reach of Business Applications

DSI SWS can enable a broad range of Value-Added Services (VAS) in carrier environments, including handset provisioning, subscriber alerts, emergency response, mobile advertising, and mobile payments. SWS can be used to send text messages notifications to mobile users, interact with customers using USSD, or determine the location of cooperating subscribers.

Figure 1 provides an example of how signaling web services based on the Dialogic DSI SS7G41 Signaling Server can be deployed in a service provider network.

Figure 1. Dialogic DSI SS7G41 Signaling Servers in a Service Provider Network

Offers High Availability and Flexible OA&M

The DSI SWS offers carrier-ready fault resiliency, occupies a small (1U) footprint, and offers dual hot-swappable AC power supplies. It supports standard operations, administration, and maintenance (OA&M) interfaces via a web browser, a command line interface, and SNMP, allowing easy integration into automated, centralized management systems.

Features and Benefits:

Features	Benefits
Service-oriented, RESTful Web Services API for SMS, USSD, and LBS utilizing HTTP with an XML payload	Allows the rapid creation of applications that can interact with mobile handsets using a wide variety of programming languages, including Java, Python, PHP and the .NET framework
Supports all layers of the SS7 protocol stack up to and including the MAP layer over TDM and SIGTRAN networks	Facilitates global deployment and the ability to configure protocol variants at runtime
Scales from 8 Low Speed Links (LSL) up to 248 LSL or 8 High Speed Links (HSL); HSL can be Q.703 Annex A or ATM	Allows cost-effective use of a common platform across a wide range of deployments; allows scaling of platform capacity over time
SIGTRAN capacity (M3UA/M2PA) scales from 8 to 256 TDM link equivalents using flexible throughput-based licensing	Lets provisioned capacity match deployment needs at installation
Compact 1U form factor with dual hot swappable AC power supplies	Permits excellent link density in a small footprint for required deployment options and carrier-ready resilience
Supports both browser and command line interface for OA&M in addition to SNMP and “lights-out” management	Facilitates comprehensive, user-friendly remote management using standard tools
Built-in traffic measurement, event logging, and protocol tracing (including PCAP format), backed by fully documented internal interfaces between protocol layers	Provides good visibility of utilization and traffic levels and facilitates fast resolution of network protocol issues

Specifications:

Configurations	DSI SS7G41
Form factor	1U Rack Mount Server
SS7 T1/E1 interface boards	Up to two boards per unit; either Dialogic DSI SS7LDH4 Network Interface Board or Dialogic DSI SS7MDL4 Network Interface Board are used
Configurations	SS7LD	SS7MD
T1/E1 ports per board	4 T1 or 4 E1	4 individually selectable T1/E1
SS7 Low Speed Links per board	Up to 16	Up to124
SS7 High Speed Links (Q.703 Annex A) per board.	N/A	Up to 4
ATM High Speed Links per board.	N/A	Up to 4
Maximum SS7 links per unit	248
Maximum SS7 link sets per unit	64
Maximum M2PA links per unit	256
Maximum number of SS7 routes	4096
Maximum number of SIGTRAN associations	256
10/100/1000Mbit/sec Ethernet interfaces	4 as standard; can be increased to 6 using Dual Gigabit Ethernet NIC accessory SS7G41NIC, which consumes one of the signaling board slots
Transactions per second over TDM or SIGTRAN (required number of transactions vary; for example, sending an SMS typically requires two transactions while a location lookup requires one)	12,000 (provisional figure)
Power	AC or DC
MTBF (Using Telcordia method at 40°C)	95,000 to 133,000 hours, depending on type and number of boards in chassis (assumes dual PSU configuration)
T1/E1 Interfaces
Pulse mask	T1: ANSI T1.403 E1: ITU-T G.703
Data rate	T1: 1544 kbps ± 50 ppm E1: 2048 kbps ± 50 ppm
Frame format	T1: D4, ESF, and ESF-CRC6 E1: E1 and E1-CRC4
Line codes	HDB3, AMI, B8ZS
Connector type	RJ-48C
Power
DC-powered products	Supply voltage (range nominal): –48 VDC to –60 VDC Input power (fully equipped): 150 W Range limits: –36 VDC to –75 VDC
AC-powered products	Input voltage: 90 VAC to 264 VAC Input power (fully equipped): 150 W Frequency range: 43 Hz - 63 Hz
Physical Dimensions
Height	1.74 in. (4.4 cm)
Width	16.93 in. (43.0 cm)
Depth	20.4 in. (51.9 cm)
Weight – fully equipped	26.8 lbs (12.16 kg)
Environmental
Operating temperature	+50°F (+10°C) to +104°F (+40°C)
Storage temperature	–40°F (–40°C) to +158°F (+70°C)
Safety and EMC
International	CB Certificate to IEC UL 60950 -1 2nd Ed. 2007 EN 300 386, EN55022, EN55024, CISPR 22
United States	UL 60950 -1 2nd Ed. 2007 FCC Part 15 Class A
Canada	CAN/CSA-C22 No UL 60950 -1 2nd Ed. 2007 ICES-003
Telecommunications
International	TBR12, TBR13
United States	TIA-968-A
Canada	CS-03
Warranty	3-years

Documentation:

Download the Dialogic DSI Signaling Web Services Datasheet (.PDF)