This CDMA FWT with 8 channels  is perfect quality. It is suitable voip gateway, pbx, pay phone,a phone and etc.

The design of the TLD SX01C-8WAYS(OEM MODULE: YS-X-CALL, YS-X-TERMINAL) FWT is to supply a standard sound phone in the area of the CDMA Cell Network covering.
The interface board of the TLD SX01C-8WAYS FWT supply a clear bond between standard phone or a VOIP GATEWAY or A PBX and CDMA Cell Network it possesses the function of the emulation phone exchanger and supply:
Features: 
Dialing tone with 450hz

DTMF Dialing 
Bell signal 
Polarity reversal 
The RJ-11 socket which connect the phone or the payment 
Antenna socket (FME) 
IP usage switch 
Working state indicator 
Signal Strength indicator
Technical Specifications

CDMA Module Dual band CDMA 2000 1X 800/1900MHZ
 Phone interface:supply RJ-11 Phone Interface 
Hanging voltage:45V  Picking off voltage:30mA/41mA
Dialing tone Frequency:450Hz
Antenna interface :Antenna amplifying 〉1.5DB
Sensitivity 〈 -104DBM
Transmitting power≤3W
Adapter interface:INPUT:AC 175~260V
UTPUT:+12V/1000MA 

Operation Circumstance: 
Operation temperature:-10℃ ~ 60℃
       Storage temperature:-20℃ ~ 70℃
       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 carrent: 30mA/41mA   
    Packing: 
     Product dimension: L455x W280 x H45mm 
     Gift box dimension: L510x W170x H64mm 
     G.W: 4.5kg