... 1LAN2100MHzWCOIP88WCDMA,1WAN,1LAN2100MHzWCOIP8-328WCDMA,1WAN,1LAN2100MHz wireless voip phone 1. 8 Channels GSM/CDMA/WCDMA VoIP ... /batch sending4. AT command compatible wireless voip phone Parameter data shit Call Control ProtocolsSIPNumber of Channels8 ... forward: unconditional, no answer and busy- N-way conferencing- Mobile Number PortabilityVoice Quality- Echo cancellation- Silence suppression ...