Switching access is realized via the digit analysis (WABE).

For RICHT MODE=LTRGENEW and LRTE=x, the principle path selection is realized via the AMOs LDPLN-->LDAT--> LSCHD-->LODR. (Influencing AMO'S KNLCR, LPROF, LAUTH, LSCHD, ...)

In AMO LDPLN, those routing codes with the digit pattern (RTECD from WABE) to be evaluated for LCR must be entered as the LCR digit pattern (LDP). With the parameter LAUTH (single value), you specify whether an LDP is allowed or blocked on a subscriber-specific basis. With the parameter LROUTE Number, you indicate the further call processing of the respective LDP with AMO LDAT. In the case of large digit pattern schedules, performance can be improved by means of OPTIIMIZE-LDPLN. See also AMO description LDPLN.

With the AMO LDAT, the trunk groups are linked with the values ODR, LAUTH and an LCR priority (LVAL) assigned to LCR route elements and prioritized for the LCR path selection. With the parameter ODR, you specify which LCR dial rule stipulated with AMO LODR is to be used with this trunk group. With the parameter LAUTH (single value), you specify the permissible access authorization (e.g. for subscribers). With the parameter LVAL, you specify the priority of a trunk group within an LRTE (LVAL=1 means highest priority). The seizure priority of the trunk group is thus specified. You have the option of assigning a host of trunk groups to the same LVAL. In this case, the trunk groups are simply searched through sequentially. All trunk groups are numbered consecutively (parameter LROUTE). The parameter LROUTE only serves to allow subsequent, selective deletion of an entry, not to assign an additional priority. With the parameter LSCHED, consideration is given to the LCR schedules.

In a network with several areas, a subscriber dials an area code and an extension in order to reach a subscriber from a different area. In this context, the extensions need only be unique within an area.