Telefon używany sprawny, stan oceniam na bardzo dobry, 

Link do strony producenta

http://www.udcsystems.com/product/sq3000.php#hw

Product Highlights

• WiFi 802.11a/b/g wireless connectivity
  • Security: WEP, WPA-PSK, 802.1x EAP-MD5, EAP-TTLS, PEAP, EAP-TLS, WPA/WPA2 Personal and Enterprise
  • WMM for Quality of Service
  • WMM UAPSD (Unscheduled Automatic Power Save Delivery) for extended battery life
  • Automatic roaming between APs without call interruption
• Voice & Video over IP Support
  • SIP (RFC3261) support, works great with Asterisk
  • Secure RTP and SIP-TLS for encrypted calls
  • Audio Codecs: Narrowband G.711, G.729AB, and Wideband HD G.722.2 codecs
  • Video Codecs: H.263, H263+, H.264 and MPEG-4 at up to 30fps QVGA
  • DTMF: Inband, SIP INFO and RFC2833, SIP MESSAGE support
• Advanced call handling
  • 3-way voice and video conference calling
  • Call history (100 records)
  • Phonebook (1,000 contacts)
  • Speed dialing (99 records)
  • Distinctive ringing
  • Polyphonic ring tones
• 2.5mm stereo headset jack
• Micro SD slot (up to 8gb)
• Light weight — only 4.8oz/135g with battery