PORTech is the original manufacturer in Taiwan with 34 years, therefore we&＃039;ll do our best to offer the best service and support. PORTech offer E1 /T1 GSM Channel bank VoIP GSM Channel bank 1/2/4/8/16/32 Ports VoIP GSM Gateway 2 ports GSM VoIP PCI Card SIM Server SBK-32:Remote SIM Bank 1/4/8 ports GSM Fixed Wireless Terminals (Follow Me GSM Gateway) IP/PSTN Power Switch ***Worldwide use (2G, 3G with all world and Japan, CDMA 2000) *** MV-37X:1/2/4/8/16/32 ports VoIP GSM Gateway VoIP GSM/CDMA/UMTS Gateway for call termination (VoIP to GSM/CDMA/UMTS) and origination (GSM/CDMA/UMTS to VoIP). It is SIP based and compatible with Asterisk, SIP Proxy Server, VoipBuster. It can enable to make 1/2/4/8/16/32 calls simultaneously from IP phones to GSM/CDMA/UMTS networks and GSM/CDMA/UMTS networks to IP phone. SBK-32:32 Sims Remote sim bank SBK-32 is a Remote SIM Bank with 32 sims that can connect with serial MV-37X via internet. Connect with PORTech GSM Gateway via internet SIM cards no longer need to be installed in GSM Gateway anymore; You can deploy your GSM Gateway in different locations. Centralize and supervise all SIMs in one place MV-37X VoIP GSM Gateway can work with SBK-32 (32 sims sim bank) directly without sim server. Just move MV-378 sim to SBK-32 - put in different place and connect via internet Then it will be one sim per GSM Port SIM Server main handle MV-37X:VoIP GSM Gateway and SBK-32:Remote sim bank With SIM Server, you can set talk time per sim and assign several sims (4 or 8 sims) per GSM Port SS-128: 128 sims SIM Server (manage 4 SBK-32 sim banks) SS-256: 256 sims SIM Server (manage 8 SBK-32 sim banks) SS-512: 512 sims SIM Server (manage 16 SBK-32 sim banks) SIM Server Features: · Set Talk Time per SIM · Set GSM Group (Assign several SIMs Per GSM Port) · Set Day of week · Set Time Range Rebecca Liu PORTech Communications Inc. Email: ***** *****