4 ports 4 sim cards GSM VOIP gateway GOIP Frequency: GSM 850/900/1800/1900MHZ
It is ideal for VoIP to Local termination where a fixed telephone line (PSTN) is not available or for cellphone roaming via the a VoIP network.
Significant savings on long distance charges can be realized.
Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2) Single or Multiple Server Registrations
Two 10/100 Ethernet circuits connect to the LAN and an additional device GSM module for making GSM calls

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 7.8 inch
Height : 2.36 inch
Length : 13.54 inch

Item Weight: 0 ounce (View shipping rates and policies)
Shipping Weight: 1.65 pounds (View shipping rates and policies)

ASIN : B009TNMUK2