Hi I have the following requiremnet of interconnecting GSM BSC with a legacy TDM MSC. Mobile phones<---AIR---->BTS/BSC<-----A/IP----->Asterisk with TE 207P<---SS7/TDM/E1----> MSC. Normally the BSC connects to MSC which supports A over IP. As far as my knowledge goes A over IP link between BSC and MSC uses SIGTRAN. So the job of Asterisk will be to convert SIGTRAN to SS7 over TDM. Has anyone used Asterisk in this fashion ? thanks. _________________________________________________________________ Windows Live?: E-mail. Chat. Share. Get more ways to connect. http://windowslive.com/explore?ocid=TXT_TAGLM_WL_t2_allup_explore_012009 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-ss7/attachments/20090201/4090e7aa/attachment.htm