Hi ride98red,
Some M1's use digit translation in Ld 49, which may be worth checking out. It is generally used to convert incoming ddi numbers to DN's or CDN's. The following commands print out the tables;
ld 49
REQ prt
TYPE idc
CUST 0 (SCH3627 - This means IDC not enabled, so you don't have digit translation)
DCNO <ENTER>
The table will look something like this;
DCNO 1 (Table 1)
SDID No
IDGT CDGT (IDGT = Incoming Digits
1000 61000 CDGT = Converted Digits)
1001 61001
1002 9845
1003 61003
DCNO 2 etc
(if you have pre-release 19 software use 'end' instead of '****' to exit program, otherwise it could cause corruption or even an INI)
In the above example, if 61002 is created as a DN, it would never receive calls from the outside world because the associated ddi (1002) is going to non-ddi dn 9845.
I hope that you find this useful, in addition to the LUDN/DNB commands you already know about.
Regards
Blighter