This object specifies the type of network service provided by the target service: 'other' The implementation of this MIB module does not recognize the configured network service. 'none' The target subscriber service does not provide a network service to subscribers sessions. 'local' The target subscriber service provides local termination for subscriber sessions. 'vpdn' The target subscriber service provides a Virtual Private Dialup Network service for subscriber sessions. This column is valid only if the 'networkSrv' bit of the corresponding instance of cdtSrvValid is '1'.