Zhengzhou Great Electronic Tech Co.,Ltd China

We are specialized in manufacturing IP phone and IP camera. Contact me if you need, skype: lxhzspy

We are a professional manufacturer of VOIP products including IP phones and ATAs. We offer simple phones with cheap prices.ODM&OEM can also be supported. Email: sales@great-elec.com msn: lucyg-reat@hotmail.com Skype: lxhzspy

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General office

Zhengzhou Great Electronic Tech Co.,Ltd
8th Floor Building68,Headquarters, No.1 the Cuizhu Street high-tech development Zone，Zhengzhou
Zhengzhou
Henan ,450007
China

Phone: +86-371-67896158
Phone: +86-371-67896128
Site: http://www.great-elec.com

Contact Person

Lucy Lu / Sales Manager
Phone: +86-371-67896128(602
Phone: +86-13838511830

International VoIP Wholesale Provider

PC to Phone, Phone To PC, Phone To Phone, Project Mangement Services, Termination, Web Call, Web To Phone

Not data

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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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