The IDC table takes the DNIS number or the digits your switch sees and converts it to whatever you want internally. Let's say the number is (222)777-1234 and you want it to go to CDN 5555. In your IDC table you'd have:
1234 5555 (if your switch is looking for the last 4 digits)
actually mine uses a 6 before the CDN to transfer, so mine looks like(not exactly sure why they programmed it that way but it works):
1234 65555
If your new number that your want to point to CDN 5555 is (222)777-3456 then you would do a change to the IDC table and add the entry to look like this:
3456 65555
ld 49
chg
idc
cust 0
dcno 1
idgt 3456
65555
Since you can have multiple DNIS going to the same CDN, you want to get rid of the 1234 entry by doing a change, type 1234, enter, x, enter to remove it.
Matt
CS1000E VoIP
CCM 6
CallParrot
CallPilot