Detailed Product Description

1.  With LCD, easy for programming
2. Least Cost Routing (LCR)
    The  device can auto-select the most economic way to dial out.  (GSM to GSM, PSTN to PSTN for outgoing call).
3.  Call Transfer ( GSM to PSTN , PSTN to GSM):
     GSM to PSTN
    - Assigned mode:  ( For call origination from GSM to VoIP)  
    - Free mode:  ( make two stage dialing  from GSM to PSTN)
     PSTN to GSM:  ( It can connect your mobile phone when you are out and a 
                                 PSTN call incoming) 
4.  99 sets of phone book with short  code setting :
5.  10 sets of GSM caller allowed number 
5.  To be disable/enable the PIN CODE of GSM SIM card.
6.  50 sets of GSM prefix number setting.
7.  FSK/DTMF  Dual Mode CID system
8.  Siemens GSM Module  TC-35 built in 
9.  SMS  function: Short Message Service (Optional)
10. Polarity reversal / 12khz/16khz for payphone billing system
(optional)
11. Frequency : 900/1800 MHZ ,  850/1900 (Optionl)