beroNet nows offers the GSM PCI interface card serie with 1-3 GSM Ports. Die BNxGSM  card series can be used with our version independent driver "bnxgsm" and channeldriver "chan_gsm" in Asterisk 1.2 and Asterisk 1.4  installations. More information about the BNxGSM cards can be found in the productsection.