The value of tmnxMobGwNtfyGtpPriServerState indicates the state of
the GPRS Tunneling Protocol (GTP) Prime Server.
The value of 'pathUp' indicates that the connection with server has
been established.
The value of 'pathDown' indicates that the connection with server has
been brought down by the gateway.
The value of 'added' indicates that the server has been added.
The value of 'deleted' indicates that the server has been deleted.