Beijing Powerunit China

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General office

Beijing Powerunit
China
Beijing
Beijing ,100086
China

Phone: 8610-51658192
Site: http://www.callupservice.cn

Hardware
International VoIP Wholesale Provider
Internet Telephony Service Provider
Internet VoIP and Video Conferencing Service Provider
VoIP Billing Software Provider
Voip consulting
Voip Termination ISP
Wireless Broadband

Billing Software

Cisco Systems
Huawei VoIP Products
Quintum

Billing system of own development

HyberTone Technology Co., Ltd.

SpeedVoIP Communication Technology Co., Ltd

Providers in database: 6433

Detailed description of SIP protocol

SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.

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