Key Specifications/Special Features:

• Key features of wifi sip phone--wiss28
• 1) sip-rfc 3261 (and 2543) conformant ua, stun rfc-3489 sdp-rfc 2327
• 2) call setup/ tear down, call transfer, calls handling, call timer, call forward,
• instant messaging, presence caller id and name tag, redial through last dialed
• numbers, call from phonebook and call history, call hold/resume
• 3) g. 711 a-law, g. 729ab, echo canceller, dtmf(in/out band), packet loss concealment,
• vad and comfort noise, volume control
• 4) dial tone / busy tone / call-waiting tone / ring-back tone / network busy tone
• 5) ringer, volume-adjustable, customized ring tone, vibration
• 6) total 21keys, including 4 soft-key 4 rocker switch keys with select key
• 7) lcd: 1.4 inch b/w stn 96*65 lcd, backlight. Led: link / incoming call indication
• 8) rechargeable li-ion 3.7v battery, 1000ma
• 9) size 108 x 41.7 x 19.1 mm
• 10) weight: 80g
• standard:ce, fcc, rohs