核心机房部署BITS时钟源（或时间服务器），BITS直连同机房的城域

BITS clock source (or time server) is deployed in the core computer room. BITS is directly connected with the metro core SPN of the computer room. If conditions permit, BITS can be deployed in the backbone converged computer room to reduce the number of nodes between the reference clock and the access network elements. Hop count

 the core room deployment BITS clock source (or time server), BITS directly together with the room's metro core SPN, the conditions are available, BITS can be used to sink to the backbone of the convergence room deployment, reduce the number of nodes between the reference clock and access network elements;

The core machine room is deployed with bits clock source (or time server), and bits is directly connected to the metropolitan core SPN of the same machine room. If conditions permit, bits can be deployed in the backbone convergence machine room to reduce the node hops between the reference clock and the access network element;<BR>