SIP <-> SS7 Gateways

• SS7 to SIP Solutions Scalable SS7 to SIP Signaling Gateway Solutions from Teleprime Advanced Communications Division
• Janus Systems High-density SS7/ISDN/CAS/SIP Signaling Converter
• Cosmos SS7-SIP Gateway Turn-key, high performance SS7/C7 solution from Cosmact. Scales from 1E1 to 64E1 per chassis. Supports single point code across multiple chassis. Flexible built in routing/digit manipulation rules for SS7/SIP conversion.
• Verisign offers a SIP to SS7 interconnection service.
• SS7/SIGTRAN SIP access service available at: The Voice Peering Fabric.
• Dialogic has an integrated media and signalling VoIP gateway that supports SS7, PRI and CAS for PSTN with SIP and H.323 for IP. IMG1010. Dialogic BorderNet 500 Gateways Provides flexibility in connecting to a wide variety of services and equipment, including SIP trunks, PSTN trunks, and legacy, hybrid, and IP PBXs.
• SIP SS7 Gateway - Squire Technologies' media gateway provides full call control routing and supports SIP, H.323, MGCP, H.248 and SS7, PRI ISDN, CAS, R2 + see more SS7 VoIP Case Studies
• Sangoma SMG: Asterisk SS7 Gateway Integrated Asterisk + SS7 Gateway Solution. Scalable and Expandable Asterisk architecture. Capacity for 16E1+. Telco certified around the world.
• Simmortel SIP Gateway: SS7 Affordable Gateway Solution built on Sangoma Cards. Scalable and Redundant SS7 architecture. 480+ concurrent calls. Mail: info@simmortel.com
• Topex Eones Topex Eones offers seamless migration path from legacy TDM networks (SS7, ISDN) to VoIP networks(SIP&H.323), with a maximum capacity of 300 simultaneous calls( 10 E1 to 300 VoIP calls ).
• OpenCloud Inter-Network Gateways - IP to IN and IN to IP translators

Resources

• RFC 3372 - Best current practise: Session Initiation Protocol for Telephones (SIP-T): Context and Architectures (About SIP - PSTN gateways)
• Master Thesis by Gonzalo Camarillo, published 1998 http://standards.ericsson.net/gonzalo/papers/report.pdf
• "Integration of SIP & SS7 for VoIP: Opportunities and Challenges" by James Rafferty at Cantata Technology. SIP Magazine March 2007

Products

• see SS7 Protocol Converters and Gateways

See Also

• SS7
• PSTN
• SIP