The value of this object is the Subscriber (SB) part of the X121 called address from the call packet to be routed. This address , with a SB format as explained below, must contains 2 digits (0..9, B). The digit 'B' (character '*' on the equipment configurator) have special meaning : 'B' matches any address. When used it must be the only digit specified (with final completion as explained below). The associated route is used only if the equipment does not find another possibility in this table. There must be only one route for each specified address. Example : If route 1 is specified for SB '12', route 2 for SB 'B', call packets to SB 12 are routed on the route 1 and all others are routed on the route 2. The value must be completed with 'F' digits for a total of 2 digits (here only if the digit 'B' is used). The equipment configurator does not need final completion. The default value is 'FF' meaning 'empty value' (blank value on the equipment configurator). Address format : Eight digits (0..9) of X121 format are used as the network address numbering plan. This numbering plan has a hierarchical structure : 4 digits define the Data Network Identifier Code (DNIC) : DNIC identifies the region to which belongs the equipment, 2 digits define the zone (ZO) : ZO identifies the equipment inside the region, 2 digits define the subscriber (SB) : SB identifies a subscriber of the equipment. Therefore each subscriber is completely identified by its address of the form DNIC ZO SB and each equipment by its address of the form DNIC ZO.