Phone to Phone
It is a type of communication between two ordinary phones, which are connected and voice transmits over telecommunication network.
Cisco 7921G is a wireless IP phone bases on the Wi-Fi (ETSI; CCM/CCME UL Reqd;Battery/PS Not Included) data transfer technology.
SpeedVoIP technology Co., Ltd
SpeedVoIP, Inc. is a leading designer and manufacturer of innovative and cost-effective VoIP telephony products, and becomes a major OEM vendor of VoIP terminal products and solutions in the rapidly growing global IP telephony market.
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