Browse Prior Art Database

Callpath/400 Telephony Simulator

IP.com Disclosure Number: IPCOM000106613D
Original Publication Date: 1993-Dec-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 82K

Publishing Venue

IBM

Related People

Brown, S: AUTHOR [+2]

Abstract

Disclosed are improvements to trace facilities in CallPath/400 to reduce both overheads and the complementary system for remote analysis of the trace produced. The invention recreates customer problem scenarios for solution by using a simpler trace facility and a simulator. Reduced is the impact to the customer of solving a problem with the CallPath/400 product and the performance-hit of running traces. Also experienced is a quicker turnaround time for the solution and less operational impact in providing diagnostic information.

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Callpath/400 Telephony Simulator

      Disclosed are improvements to trace facilities in CallPath/400
to reduce both overheads and the complementary system for remote
analysis of the trace produced.  The invention recreates customer
problem scenarios for solution by using a simpler trace facility and
a simulator.  Reduced is the impact to the customer of solving a
problem with the CallPath/400 product and the performance-hit of
running traces.  Also experienced is a quicker turnaround time for
the solution and less operational impact in providing diagnostic
information.

      CallPath/400 provides the CallPath Services Architecture API on
the AS/400.  It consists (Fig. 1) of an API layer and one "Connection
Manager" for each supported telephone switch type.  The connection
manager is a message driven finite state machine that receives
application messages from the API via an input queue, processes them
and issues messages to the API or switch.  Messages from the switch
are also received and processed via the input queue.  A field problem
is normally investigated by the customer turning on the connection
manager trace.  This produces large amounts of hardcopy information
such as control blocks, call states and message decoding which is
sent to IBM for investigation, a process which can cause performance
problems for the customer.  The hardcopy nature of the trace is
limiting because typical errors are far removed from their symptom
and dependent on individual circumstances, making it difficult to
reproduce later when the fix is tested.  CallPath/400 was the first
licensed product to attempt AS/400-to-switch communications, so this
problem was not seen earlier, and no resolution was needed then.

      The solution (Fig. 2) described here provides higher quality
customer assistance, problem resolution, faster, more accurate,
reduced impact, and improved real life regression tests.  It consists
of changes to the trace produced by the connection manager and tools
used during problem analysis, known as "The Simulator".  For som...