Ets 6688V Desktop 4G Volte  phone 

Brand: Etross or OEM brand 
Model no.: Etross-6688V
Product name:  Dual SIM card GSM FWP, 4G Volte Fixed Wireless Phone

Frequency:

TD-LTE B38/B39/B40/B41

FDD-LTE B1/B2/B3/B5/B7B8/B28

WCDMA B1/B2/B5/B8

TD-SCDMA B34/B39

TWO-band EDGE/GPRS/GSM

Compatibility LTE CAT4, 3GPP R9

OS:
Android 4.0

Features: 
1. Support TD-LTE, FDD-LTE, WCDMA, TD-SCDMA, GSM, EDGE
2. Caller ID  Display
3. Dot-matrixed display with Chinese, English, Spanish (optional)
4. SMS function 
5. IP No. Setting 
6. Software upgrade jack 
7. Data service, Support CSD and GPRS class 10/8. Connect PC by USB port 
8. Call in / Call out /Call divert/ Call waiting limitation function 
9. Lock up function: SIM card, network, cell and operated company 
10. Local No. / direct No. / limited No. Setting 
11. Speed dial function 
12. Redial function 
13. Support three-way conference call 
14. Save more than 100 SMS on the phone 
15. 7-level headphone volume and silence adjustable 
16. Speaker Phone 
17. Low-power indicator 
18. Storage 20 missed call or received calls and the last ten dialed number 
19. Voice mail function 
20. Packing Size (mm): 220*160*53 
21. Support STK1114 
22. Emergency call: At off-hook or hand-free state, can calling emergency number without

Technical Parameter: 
1. Operating Freq.: TD-LTE, FDD-LTE, WCDMA, TD-SCDMA, GSM, EDGE automatically switch 
2. Normal operation temperature: -30 ---70 
Restricted operation temperature: -30 ---80 
Storage temperature: -40 ---85 
3. Environment noise: Below 60dB(A) 
4. Support SIMCard 1.8V/ 3V 
5. Channel interval: 200KHz 
6. Receive sensitivity: <-100dBm 
7. Relative humidity: 45%~95% 
8. Atmosphere pressure: 86~106Kpa 
9. Support for software upgrade on line 
10. AC power voltage: 220V?à22V, Freq.: 50Hz 
11. GPRS multi-slot class 10/8 
GPRS mobile station class B 
12. Compliant to GSM phase 2/2+ 
      -Class 4() 
      -Class 1() 
13. Control via AT commands 
(GSM 07.07, 07.05 and SIMCOM enhanced AT Commands) 
14. Phone: DC 9V 1000mA 
15. Battery: 3, 6V 1300mAH Ni-MH rechargeable battery (accessory) 
1. With batteries, standby time is more than 72h 
2. With battery, Call time is more than 4h

Applications: 
1) For public use as payphones 
2) For office and home use 
3) For rural and mountainous areas 
4) For mobile carriages, like ships, automobiles and trains 
5) For those places where hardwire-line telephone service is unavailable

Standard component: