justzikle

I have 4 PRI DID lines in my meridian 81c system.How would i setup DID nos.The exchange is sending only "264" three digits, and systems extensions nos r from "1001 to 1450". How cud i setup DID that if a caller dial a no "2641010" then call goes to direct extension no "1010".
I believe that we use LD 49 only when digit conversion is required. My question is that the exchange is sending only three digits "264" and the next 4 digit r extensions (we have to programme).I mean how cud system detects that it some particular call is for particular extension?? the definition or configuration shud be defined somewhere in some LD.I saw a merdian system having 2 PRI. and having no IDGT table(ld 49) and calls r going to extension.