This is a SIPURA/LinkSys/Cisco brand ATA (analog telephone adapter) to NCIDD (network caller-ID daemon) gateway. sipura2ncid uses the ATA's debug message output to a syslog server. No need for packet snooping or network rearrangement.
A system for logging/presenting information about incoming phonecalls.
Currently only working for ISDN routers with the ability to send syslog messages.