JCO Timeout for SAP Business Connector 4.7

Environment :
Windows 2000, SAP Business Connector (BC) 4.7
General Description :
SAP BC is used to invoke BAPI's in the SAP R/3 system.
Issue :
Some BAPI's are taking some time to return response depending on user load. Need to provide a timeout for RFC calls invoked by SAP BC using JCO.
Following is the entry in the rfc trace log file when BC starts up ...
000000 -
2005-05-12 11:07:20 EDT
000001 [B2B-SAP.0011.0001] [JNI-LAYER] RFC.nativeSetTraceLevel()                with rc = RFC_OK   leave, [SUCCESS]
000002 [B2B-SAP.0002.0022] Log level set to 10
000003 [B2B-SAP.0002.0025] Registered SAP package trace with core trace
000004 [B2B-SAP.0002.0014] Starting SAP services
000005 [B2B-SAP.0011.0001] [JAV-LAYER] JCO.setProperty(jco.jdsr.comp_name, SAP BC server0023 5555)
000006 [B2B-SAP.0003.0001] Loading native libraries
000007 [B2B-SAP.0003.0002] JCO version: 2.1.4 (2004-10-20) sapjcorfc 2.1.4 (2004-10-20)
000008 [B2B-SAP.0003.0004] jRFCLibrary info: 2.1.4 (2004-10-20)(C:\sapbc47\Server\packages\SAP\code\libs\sapjcorfc.dll)
000009 [B2B-SAP.0003.0003] RfcLibrary version:
This RFC library belongs to the SAP R/3 Release *** 640,0,41 *** MT-SL
Versions of SAP internal libraries:
dptr:    2
ni :   37
cpic:    3
rfc :    3
00000A [B2B-SAP.0011.0001] MiddlewareRFC.setProperty(jco.middleware.wait_for_request_time, 1)
00000B [B2B-SAP.0002.0016] Loaded SAP server configurations
00000C [B2B-SAP.0002.0015] SAP services started
00000D [B2B-SAP.0011.0001] [JAV-LAYER] JCO.Client.setAbapDebug(false), current state false
00000E [B2B-SAP.0011.0001] [JAV-LAYER] JCO.Client.setTrace(true), current state false
00000F [B2B-SAP.0011.0001] [JAV-LAYER] JCO.Client.setAbapDebug(false), current state false
000010 [B2B-SAP.0011.0001] [JAV-LAYER] JCO.Pool.setMaxWaitTime(30000)
000011 [B2B-SAP.0011.0001] [JAV-LAYER] JCO.Pool.setConnectionTimeout(600000)
000012 [B2B-SAP.0011.0001] [JAV-LAYER] JCO.Pool.setTimeoutCheckPeriod(30000) on pool SERVER-300&USER_RFC&300&EN
000013 [B2B-SAP.0011.0001] [JAV-LAYER] JCO.PoolManager.addPool:
      name = SERVER-300&USER_RFC&300&EN,
      connection = USER_RFC|300|EN|AS=[11.12.7.296|00|]G0|,
      pool_size = 10,
      max_wait_time = 30000,
      pooled_connection_timeout = 600000,
      timeout_check_period = 30000
000014 [B2B-SAP.0005.0003] Pool changed: SERVER-300&USER_RFC&300&EN containing 0 connection(s)
007E72 [B2B-SAP.0006.0001] Executing invoke for ZBAPI_TEST_Service on SERVER-300
007E73 [B2B-SAP.0011.0001] [JAV-LAYER] JCO.Client.execute (ZBAPI_TEST_Service) on handle [2]
Questions :
   1) Is there a SAP BC configuration parameter for RFC execution timeout ??
   2) Any other way of enforcing the RFC time out ??
   3) If there is a way to set timeout on JCO.Client.execute method ??
I really appreciate your help !!

I have tried changes the connection timeout value but if doesnot affect the time RFC. Following is from SAP BC adapter guide ..
Delay (minutes) until an unused connection to a SAP
System is timed out (default: 5)
I think I need similar setting as that for RFC connection !!

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