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What is SS7?
• SS7 = Signaling System 7
• Signaling = functions that must be performed in a telephone network in order to make / receive calls
– e.g., call routing, setup, and tear down
• Number 7 = 7th iteration of signaling methodology
• Less susceptible to fraud than previous types of signaling
• More cost effective than earlier signaling methodologies
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SS7 Significance• Why is SS7 important?
– Foundation for basic & advanced global telecom services
• How is SS7 different from the rest of the telephone network?
– Pure data network
– Physically separate from voice network
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SS7 Network – Simplified Diagram
STP
MSC
STP
MSCVoice Path
SS7 Signaling Path
SS7 Signaling Path
SS7 Signaling Path
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SS7 Applications• Simplifies and enables cost effective connectivity to carriers
– Hub-based connectivity– One to many vs. extensive bi-lateral connections
• SS7 enables advanced services– Caller ID– SMS messages- Local number portability- Toll free number portability- Alternate destination on busy- Remote call forwarding- Enhanced toll free service- Inbound call restriction- Outbound call restriction
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Syniverse SS7 Applications• Applications providing value added services
– National Calling Name (CNAM)
– Fraud Manager
– Signaling Solutions
– SMS Interworking Gateway (SMS – IG)
– Uniroam
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STP
MSC
STP
MSC
SS7 Value Added Service – Simplified
Voice Path
SS7 Signaling Path
SS7 Signaling Path
SS7 Signaling Path
GSM CDMA
UNIROAM
SCP
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SS7 is an Enabler for Syniverse• Products that leverage SS7 network to generate revenues
– Inlink– ISUP– Links & Ports– Query/Response Service (QRS)– Toll Free– CNAM Transport– LIDB Storage– Local Number Portability (LNP)/ Local Routing Number (LRN)– National CNAM– Visibility
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Impact of IP• Next Generation Signaling (IP) eliminates
requirements for physical connections– IP connection required
• Lowers network costs
• Enables new services– Voice over IP (VoIP)– Multi-player gaming– Content sharing– Fixed/Mobile convergence– Presence management– Multi-party video conferencing