SoftSwitch Class 4.

Wholesale VoIP Solution enables providers to leverage their relationships with multiple carriers and offer exchange services for call origination/termination and serving own subscribers.Supports the following protocols:

• SIP
• SIP B2BUA
• SIP Proxy
• SIP Redirect
• RFC 3261 Session Initiation Protocol
• RFC 3262 Session Initiation Protocol
• RFC 2327 Session Description Protocol (SDP)
• H.323
• H.323 LRQ / H.323 Gateway
• ITU-T H.323 v.2, v.3, v.4
• H.245 tunneling H.245
• FastStart
• H.225.0/Q.931
• MEGACO/H.248
• IETF RFC 3525 (base protocol)
• ITU-T H.248.1 (base protocol), H.248.2 (fax packages), H.248.8 (error code and service change reasons)
• MGCP
• RFC 2705 (Media Gateway Control Protocol (MGCP) Version 0.1)
• RFC 3435 (Media Gateway Control Protocol (MGCP) Version 1.0)
• RFC 793 Transmission Control Protocol (TCP)
• Т.38
• DTMF: RFC 2833 in-band/out-of-band
• 3G: IMS-TISPAN (MGCF, BGCF, SGF, T-MGF)
• SIP-T/Q.915.5 / RFC 3372, RFC 3398, RFC 3578, and RFC 3204
• SIP-I / ITU-T Q.1912.5.