Calling Card International, Inc United States

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Calling Card International, Inc
520 Hayden St
Fort Wayne
Indiana ,46802
United States

Phone: +1 260-255-4433
Site: http://www.callingcardint.com

Contact Person

Simon Bray / President
Phone: +1 260-255-4433
Phone: +1 260-804-3371

Wholesale VoIP Carrier

Billing Software
Call Back
Call shop solution
Consultancy Services
Hosted PBX
Hosted VoIP
Partnering for Origination and Termination
PC to Phone
Phone To PC
SIP Softswitch & CPE
Sip Trunking
SIP VoIP Gateway
Termination
Virtual PBX
VoipSwitch

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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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