VOIP GSM GATEWAY - GW--4000 SERIES  
CALL-BACK Systems VoIP GSM Gateway for UMTS, GSM, CDMA and E1 / T1-PRI are the leading professional equipment for total connectivity solutions.

 The EDGE-Gateway VoIP GSM Gateway line of products provides a tailor-made solution for SMEs (small and medium-sized enterprises), alternative carrier call termination and for call origination providers.  
One of CALL-BACK VoIP products which have been recently launched,

 called GW--4000vs, also belongs to the Gateway family.  
GW--4000vs supports H.323. It is a complementary product to H.323-based IP equipments and supports up to 72 GSM ports. By using GW--4000vs there is no need for any external VoIP Gateways such as Cisco or Quintum.  
GW--4000vs VoIP GSM Gateway main features:  
• From 16 to 72 CELLULAR ׂ- GSM / CDMA / UMTS   ports  
• Up to 288 SIM cards  
• Advanced LCR and routing groups  
• IP address and DDI pattern restrictions  
• Remote pre-paid SIM recharge  
• Integrated antenna splitter  
• GSM worldwide use (850MHz / 1,800MHz / 1,900MHz)  
• Redounded power supply  
• WEB management and control  
The GW--4000vs VoIP GSM Gateway fixed cellular terminal can be used not only as a GSM Gateway but also for UMTS and CDMA (850 / 1900).  

Please feel free to contact us at any time and for more Information

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