SCA Critical Errors When Receiving SIP 488 Message (Doc ID 2822884.1)

Last updated on DECEMBER 17, 2021

Applies to:

Symptoms

In Oracle Communications Network Charging and Control (NCC) and Oracle Communications Convergent Charging Controller (OC3C), the Session Control Agent (SCA) is a highly available and scalable Session Initiation Protocol (SIP) transparent back-to-back user agent (B2BUA), redirect server, proxy server and registrar. It provides support for SIP messaging and integrated triggering capabilities for Oracle Communications Network Charging and Control and third-party applications. The SCA enables real-time charging, instant messaging and personal mobility in SIP-based next generation networks (IETF/ETSI NGNs) and in the IP Multimedia Subsystem (3GPP IMS, 3GPP2 MMD). It can be integrated into NCC's Prepaid Charging solutions based on Charging Control Services (CCS), with on-line charging interfaces to the NCC Voucher and Wallet Server and to third party real-time billing systems.

There is a scenario when SCA receives a SIP 488 message that generates the following error message:

 The scenario messages looks like following:

a-leg                       SCA                                  b-leg

  ------ INVITE  ------>
                                       ------ INVITE  ------>
                                       <------- 100 ---------
<------- 100 ---------
                                       <------- 488 ---------
                                       -------- ACK -------->
<------- 404 ---------

Changes

Cause

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