This read-write SnmpAdminString (1-64 characters) holds the line name as identified by the MGC, defaulting to 'LINE', and per the description may be supplied by the agent (read-only) if a common naming convention is used. An admin sets this to keep the gateway's line naming aligned with whatever the connected MGC expects when referencing that line in signaling. If a call agent reports errors addressing a line by name, an admin would check whether this object's value actually matches the MGC's expected line identifier.