>>Advanced bulk sms modem :

128 sim / 64sim advanced bulks sms modem, available many advanced features like sms control and can view sms counts at any time, one of the innovative special function in this modem is memory available (sms counts in memory) , once power shut and resume modem will store sms counts in local memory and resume and continue from the last sms count from last sms sending port.
the new gsm gateway with the modular design can provides up to 2 plug-in gsm gateway modules which could support 4 or 8 gsm channels and 2 ethernet ports, developed for interconnecting a wide selection of codecs, including g. 711a, g. 711u, g. 729, g. 722, g. 723, g. 726 & gsm, to the gsm cellular networks to quickly reduce telecommunication expenses and maximize cost-savings.
with the unique design of the gsm gateway, it can support hot-swap for both sim cards and gsm gateway modules. 
Users can simply add or remove the modules for hardware expansion or exchange.
each gsm gateway module runs an independent asterisk system inside.
it supports sms messages sending and receiving and group sending and sms to email.

Technical Specifications

• codecs support g. 711a, g. 711u, g. 729, g. 723. 1, g. 722, g. 726,gsm
• quad-band gsm 850/ 900/1800/1900 mhz & band binding.
• dtmf signaling support rfc2833, inband, sip info.
• open api interface ami
• echo cancellation itu-t g. 168 lec
• support static ip and dhcp
• support openvpn and pptp (coming soon).
• call duration limit
• clir(call line identification restriction)
• call waiting
• call forwarding(unconditional, no reply, busy, not reachable)
• sms bulk transceiver, sms automatically resent
• support sms interface.
• sms sent to e-mail.
• ussd transceiver.
• sms remotely controlling gateway
• imei number automatically modify
• mobile number portability (mnp)
• support configuration file backup and upload.
• support for custom scripts, display
• least cost routing (lcr),according to time, port,calling number.
• independent system for each module.