HP 200 Series Services And Applications page 262

Using Synchronous Pass-Through to Consolidate Synchronous Traffic
Conclusion
Conclusion
Sync pass-through provides the opportunity to consolidate the traffic of
many synchronous devices onto the corporate extended LAN internetwork.
Consolidation of synchronous traffic can help reduce recurring monthly
communication costs and costs associated with network support. Synchro-
nous frames are transformed into LAN packets and bridged from source to
destination. Synchronous devices must employ the HDLC data-link protocol
or a derivative to transfer data using sync pass-through.
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