International Business Machines Corporation

Helga Hermann

Juergen Saalmueller

Eberhard Amann

A method is provided to adjust time delays and sequence ordering of data channels in synchronous clocked bus systems. In particular, the invention relates to a method to re-synchronize data in respective channels which have a relative delay to each other caused by different path lengths, etc., on the way from sender to receiver. Still more specifically, the invention relates to an apparatus used to eliminate those delays in order to make data usable again on the receiver side. The method can be carried out using standard microprocessors without the need for special hardware implementations. Thus the use of costly and performance intensive ASICs and signal processors can be avoided.

Method and apparatus for adjustment of time delays in synchronous clocked bus systems

Method and apparatus are provided for re-synchronizing a group of B channels in an ISDN network using the BONDING Mode 1 specification. Re-synchronization is achieved without the need to first disconnect the affected group of B channels from the network. Thus, the reliability of the bonded channels is improved while maintaining a simpler architecture than those associated with BONDING Modes 2 and 3. The solution offers improved channel reliability, improved network performance and reduced network load when channel re-synchronization becomes necessary.

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Leinfelden-Echterdingen, Germany

Helga Hermann