The packet timing type specifies the method of transmitting or receiving timing information so that packet timing end-points may synchronize their system clocks. This object supports three enumerations. - 'inband', timing information is transmitted or received within the packet timing packets. - 'sntp', timing information is transmitted or received utilizing an SNTP client or server - 'sntpInband', timing information is transmitted or received within the packet timing packets and also from an SNTP client or server.