CallMaster Communications Costa Rica

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General office

CallMaster Communications
Rohrmoser
San Jose
San Jose ,1000
Costa Rica

Phone: 50622203027
Site: http://www.callmaster.com

Contact Person

Donald Dodt / CEO
Phone: 50622203027
Phone: 50688793780

International VoIP Wholesale Provider
Voip consulting

Call Relay VoIP Solutions
Call Routing VoIP Solutions
Consultancy Services
Data Conferencing
E1 Bulk Wholeseller
Fax To Fax
Gatekeepering
H.323 VoIP Gateway
H.323 Wireless/ GSM VoIP Solutions
Installation and Support Services
PC to Phone
Phone To PC
Phone To Phone
SIP VoIP Gateway
Termination
Web Call

Cisco Systems

another

CallMaster Communications

A1 VOZCO Telcom

Providers in database: 6433

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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