as ace posted, if you've got the merl do a search for ac1, that is usually where you will find 9 as access code 1. pressing ac1 or ac2 sends the call to ld 90. in load 90 you define every possible 3 and 4 digit number combination that can be used. three types, npa (1803) nxx (434) or spn (911,1010288) for each type of call, you define a rlb (route list block) in ld 86. that is where you point the call to a route (ld 16) and assign a frl (facility restriction level), you can alter the actual digits there if you need to. that is ld 86 (dgt) digit conversion table, the most common dgt is to delete the 1 for 1803 npa, mosy (not all) ld carriers do not need the 1, in as much as they know it's an ld call, since they don't handle local. the only other point is when you have ncos to frl mapping 1 for 1, if the frl on a rlb is 4 and the station has an ncos of 4 or above, the call goes out. that is a quick tour of bars, dial 9. their is a lot covered in that one paragraph, but that's a complete 40 hour course, so you may need to read it more then once..
john poole
bellsouth business
columbia,sc