Imass Telecom United Kingdom
- International VoIP Wholesale Provider
- Internet Telephony Service Provider
- Hosted VoIP billing service provider
- Voip Termination ISP
- VoIP Billing Software Provider
- Voip consulting
- SIP Billing
- Phone To Phone
- Phone To PC
- Fax To Fax
- Web Call
- Outsourced Billing
- PC to Phone
- Web To Phone
- Voice and Video Conferencing
- Termination
- Billing Software
- Call Relay VoIP Solutions
- H.323 VoIP Gateway
- E1 Bulk Wholeseller
- Partnering for Origination and Termination
- H.323 Softswitch & CPE
- SIP Softswitch & CPE
- SIP VoIP Gateway
- Cisco Systems
- Quintum
- Java Based own system
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.
Divine Telecom, Inc.
DivTels main focus is on maintaining international quality standards while creating flexible and innovate IP telephony solutions which offer customers the finest voice quality, performance and customization capabilities.
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