Coms.Com Ltd United Kingdom

Coms.Com gives you a real personal telephone number that is connected to the Internet, so that you can make and receive low-cost calls and manage your messages where ever you have an IP connection.

Ubiquitous broadband internet access in homes, offic

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General office

Coms.Com Ltd
77 Queen Victoria Street
London
,EC4V 4AY
United Kingdom

Phone: +44 (0)20 7148 3000
Site: http://www.coms.com/

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VoIP Favors SIP

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.

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