CISCO CP-7940G 
 Specifications See: For more information or more pictures 

 The main parameters 
 Main features interactive soft keys that provide context-based call options; use of open XML API to provide applications on the screen; automated telephone search, VLAN configuration and registration; by supporting 802.1Q / p, to provide quality of service (QoS), and configurable DIFFSERV and TOS; voice activity detection, silence suppression, comfort noise generation and error concealment, etc. 
 Network protocol G.711a, G.711u, G.729ab 
 Feeder power supply specifications 
 Appearance Specification 
 Dimensions 203.2x266.7x152.4mm 
 Product Weight 1.6Kg 
 Certification 
 If you have a product safety certification CE mark means that it 89/336/EEC (European Environment Control Center) and 73/23/EEC requirements, including the following safety and electromagnetic compatibility (EMC) standard 
 Environmental conditions 
 Operating Temperature 0-40 ℃ 
 Storage temperature -10-60 ℃ 
 10-95% relative humidity