Fix (APAR): PI18933 Status: Fix Release: 8.5.5.3,8.5.5.2,8.5.5.1,8.5.5 Operating System: AIX,HP-UX,IBM i,Linux,Solaris,Windows Supersedes Fixes: CMVC Defect: xxxxxx Byte size of APAR: 544286 Date: 2015-10-05 Abstract: sip proxy parsing error results "internal server error" message Description/symptom of problem: PI18933 resolves the following problem: ERROR DESCRIPTION: On certain inbound SIP messages, the SIP Proxy reports a parsing error which results in an "Internal Server Error" message sent to the client. LOCAL FIX: none PROBLEM SUMMARY USERS AFFECTED: All users of IBM WebSphere Application Server V8.5 Session Initiation Protocol (SIP) Proxy Server. PROBLEM DESCRIPTION: The SIP Proxy is unable to parse the message. It results in an "Internal Server Error" response. RECOMMENDATION: None The SIP Proxy is unable to parse the message. A parsing error occurs in the routing information portion of the message. It results in an "Internal Server Error" response. PROBLEM CONCLUSION: We fixed the code to catch the parsing error. The fix for this APAR is currently targeted for inclusion in fix pack 8.5.5.4. Please refer to the Recommended Updates page for delivery information: http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980 Directions to apply fix: Fix applies to Editions: Release 8.5 __ Application Server (Express or BASE) X_ Network Deployment (ND) __ Liberty Core __ Edge Components __ Developer Install Fix to all WebSphere installations unless special instructions are included below. Special Instructions: None NOTE: The user must: * Logged in with the same authority level when unpacking a fix, fix pack or refresh pack. * Be at V1.4.3 or newer of the Installation Manager. Certain iFixes may require a newer version of the Installation Manager and the Installation Manager will inform you during the installation process if a newer version is required. The IBM Knowledge Center can provide details, if needed, on the use of the Installation Manager to apply the iFixes. http://publib.boulder.ibm.com/infocenter/install/v1r4/index.jsp. Shutdown WebSphere Application Server before applying the iFixes. Restart WebSphere Application Server after applying the iFixes. Directions to remove fix: The IBM Knowledge Center can provide details, if needed, on the use of the Installation Manager to remove the iFixes. http://publib.boulder.ibm.com/infocenter/install/v1r4/index.jsp. Shutdown WebSphere Application Server before removing the iFixes. Restart WebSphere Application Server after removing the iFixes. Directions to re-apply fix: 1) Shutdown WebSphere Application Server. 2) Follow the Fix instructions to apply the fix. 3) Restart WebSphere Application Server. Additional Information: