Specification :

Brand: ETROSS or OEM brand
Model No.: ETROSS-8888G
Product name: 8 ports/ channels GSM FWT Fixed Wireless Terminal/ GSM FCT Fixed Cellular Terminal/ GSM Gateway/ GSM WLL/ GSM Channel Bank
Frequency: GSM 850/ 1900MHz, 900/ 1800MHz

Features:
1.DTMF Dialing
2.IP Presetting
3.Has 8 FXS ports
4.IMEI Changeable
5.Displays caller ID
6.Can hide subscriber ID
7.Bell signal, clear voice
8.Comptiable with Asterisk
9.Provides reversal polarity for metering
10.Working status and Signal Strength by LED indicator
11.8/ 32 SIM cards can rotate by using time or calling-out times
12.Compatible to any telephones, PBX, VOIP gateways, call-back system

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: 8 RJ-11 Phone Interfaces
Picking off voltage: 30mA / 41mA
Antenna interface: SMA antenna connection
Transmitting power