Беспроводной телефон

Overview The ATWF40 is an ideal solution of portable Wireless Voice over IP (WVoIP). It extends the convenience of wireless connection and provides the friendly graphical LCD user interface and 802.11b/g compatibility. The ATWF40 allows users to make or receive phone calls in the coverage of 802.11b/g wireless environment and offers high quality voice utilizing cutting-edge WiFi Multimedia (WMM) Quality of Service, echo cancellation, comfort noise generation (CNG) and voice compensation technology. The ATWF40 has additional features such as 1.77 65K TFT color LCD, progressive backlight, 2.4G frequency band and 40 Polyphonic MIDI Ring. Feature 1.77 65K TFT color LCD (128*64 Pixel) Compliant with SIPV2 and 802.11b/g progressive backlight supported Support WMM(WiFi Multimedia) Qos/ VAD (Voice Activity Detection)/ CNG (Comfort Noise Generation)/ Echo Cancellation and Jitter buffer for excellent voice quality Stand by time: 72 hours, talking time: 4 hours Application SIP proxy redundancy _dynamic via DNS SRV, A records SMS funtion NAT Traversal by STUN and UPnP DHCP Server and Client IP conflict detection QoS with Layer 2 (802.1Q VLAN, 802.1p) and Layer 3 (ToS, DiffServ) Description Keypad Send,End,5-way navigation key, 4-soft keys, dialing Volume up/down side button, Keypad 0 9,*,# Wireless IEEE802.11b/g supported Frequency band: 2.4G WEP, WPA/WPA2 supported Voice Codec G.711 (A-Law, u-Law) G.729A/AB Adaptive Jitter Buffer Management Voice Activity Detection Comfort Noise Generation Echo Cancellation Management Firmware Upgradeable Web and IVR-driven Management Interface (TFTP, HTTP, HTTPS) Local and Remote Syslog (RFC3164) Auto Provisioning and SNMP V2 SNTP Time Synchronization Multi User Level Call Features 3-way conference, Music on hold, Call hold/forwarding/mute/transfer/waiting Caller ID and CWCID, DTMF Relay- In-band, Out-band and SIP info Hotline, Short Dial, Call Block, Dial Rule etc.