S2T Spain
- International VoIP Wholesale Provider
- Internet Telephony Service Provider
- Call Routing VoIP Solutions
- E1 Bulk Wholeseller
- H.323 VoIP Gateway
- H.323 Wireless/ GSM VoIP Solutions
- PC to Phone
- Phone To PC
- Phone To Phone
- SIP Softswitch & CPE
- SIP VoIP Gateway
- Termination
- 2N
- Cisco Systems
- Billing system of own development
Session Initiation Protocol (SIP) is a text-based standard put in place by the Internet Engineering Task Force (IETF) and is the primary protocol for Voice over Internet Protocol services. SIP is similar to a MGCP in that it's a signaling protocol that can create, maintain and terminate sessions in IP-based networks. These sessions include multimedia conferencing and two-way phone calls. SIP protocol can run on User Datagram Protocol (UDP), Stream Control Transmission Protocol (SCTP) and Transmission Control Protocol (TCP) because it was created to function independently from the underlying Transport Layer as an Application Layer.
TelefonicaWeb
Free Reseller solution ,customized and ready in 24h with sofphone and user portal with your name,color and logo.Fully solutions billing,routing,callshop,calling card,user interface,did,webcallback,cli callback,voip mobile,customized softphone
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