New type 8 Channels 32 SIMs GSM Gateway Etross-8888 with Auto IMEI Change+Auto SIM Rotation (850/1900MHz,900/1800MHz) 

** 9 Years manufacturer experience

** 24 hours technical service standby

**1 Year warranty with best module M35 in market of China 

Etross-8888 is a GSM to Analog Converter, the device can produce a FXS line to allow a regular phone to be connected and used just like a local landline(PSTN) except your calls will go out the GSM network. This device can both receive and make calls.

Features:

 1) It is a 8 channels GSM Gateway that has 8 ports FXS interfaces;

2) It can connect with ordinary telephone set, PBX , VOIP Gateway, Billing meter etc.;

3) Dialing tone frequency:450hz;

4) Can adjust dial interval from 0.5sec to 9 secs by setting up from telephone set;

5) Can adjust voice volume by setting up from telephone set;

6) Caller ID display;
7) DTMF Dialing;
8) Bell signal;
9) Polarity reversal;
10) Antenna socket (SMA);
11) IP Presetting;
12) Working status and Signal Strength by LED indicator;

13) IMEI Change (optional)

Technical Specifications:

Air interface standard: GSM850/1900Mhz,900/1,800Mhz phase 2+ full band 
Frequency ranges:
A) GSM 850 GSM 1900:
I) Transmission: 869.2 ~ 893.8MHz I) Transmission: 1, 930 ~ 1, 990MHz
Ii) Reception: 824.2 ~ 848.2MHz Ii) Reception: 1, 850 ~ 1, 910MHz 
B) GSM 900: GSM 1800: 
I) Transmission: 890 ~ 915MHz I) Transmission: 1, 710 ~ 1, 785MHz 
Ii) Reception: 935 ~ 960MHz Ii) Reception: 1, 805 ~ 1, 880MHz 
Phone interface: supply RJ-11 Phone Interface
Hanging voltage: 45V
Picking off voltage: 30mA / 41mA
Dialing tone Frequency: 450Hz
Antenna interface: Antenna amplifying>2.5db
Sensitivity:<-104DBM
Transmitting power<3W
AC-Adapter interface: INPUT: AC 110~240V
OUTPUT: 5V 7A

AC-Power type: EU,US,AU,British can be optional

Operation Circumstance:

Operation temperature: -10c~60C
Storage temperature:-20C~70C
Operation humidity:45%-95% 
Atmosphere pressure:86-106Kpa
Environment noise: <60DB
Transmitting Power:2W
Sensitivity: <-104dbm
Antenna Amplifying: >1.5db
Dialing frequency: 450Hz
Hanging voltage: 45V
Picking current: 30mA/41mA

Working diagram: