DIVF Dialplan¶

Our main yate switch (@divf.retronetworking.org) has (as of December 1st, 2023) the following philosophy of processing called/calling party numbers:

Incoming calls from ISDN (Q.931) attached subscribers/PBXs¶

PBXs within the +49-30 (or any other German area code prefix¶

• Convert the Calling Number to national format, if it is "unknown" (caller_to_national)
  • this means something like 03012342111/unknown/isdn or 03012342111/unknown/unknown gets translated to 3012342111/national/isdn
• collect all the overlapped digits
• directly route calls of any type to old 4-digit short-hand codes for backwards compatibility (i.e. 2yyy, 3yyy, 4yyy, 9yyy, 9yyyy)
• convert Called Number to national format (convert_called)
  • if Called Number is national format, keep it
  • if Called Number is international format, keep it
  • if Called Number is unknown, translate as follows
    • if it starts with 00, strip that, add 49 and change type to international
    • if it starts with 0, strip that and change type to national
• route international calls to international destinations (intl_outbound)
  • convert Calling Number from national to international (caller_to_intl)
• route national calls to national destinations (natl_outbound)
  • block/drop calls to any prefixes resrved in German national diaplan (like 500/501, 701, 801, 90[1-5], ...)
  • route anything to area code 30 to berlin
  • route anything to area code 4644 to the EWSD of jolly (via national ISUP/SS7 via TDMoIP)
• prefix-match to direct international interconnects
  • 4205 gets routed to jpesak EWSD (via international ISUP/SS7 over TDMoIP)
  • anything else gets routed via enumroute to C-NET / CKTS