I have the requirement of converting 2400 analog FXS lines to SIP. Normally for smaller deployments I would use an Adtran 924 to SIP trunk back to my asterisk server hosting. At this time there is no extreme-density RJ21 (amphenol) to SIP solution that I can find. All are basically one or two amphenol/rj21 to 1RU. I need north of 10-20 rj21 to a blade-type chassis. Please share any solutions you have seen for extreme-density channel bank to SIP applications.