4.12.3. Receiving Nonstandard Registration Messages

An unsolicited GCEV_EXTENSION event with an extension ID (ext_id) of IPEXTID_RECEIVEMSG can be received that contains a nonstandard registration message. The associated GC_PARM_BLK contains the message details as follows. A message identifier element of the form:

• IPSET_MSG_REGISTRATION
  • IPPARM_MSGTYPE = IP_MSGTYPE_REG_NONSTD

One or more additional elements that contain the message data of the form:

• IPSET_NONSTANDARDDATA
  • IPPARM_NONSTANDARDDATA_DATA. The maximum length is MAX_NS_PARM_DATA_LENGTH (128).
  • IPPARM_NONSTANDARDDATA_OBJID. The maximum length is MAX_NS_PARM_OBJID_LENGTH (40).

OR

• IPSET_NONSTANDARDDATA
  • IPPARM_NONSTANDARDDATA_DATA. The maximum length is MAX_NS_PARM_DATA_LENGTH (128).
  • IPPARM_H221NONSTANDARD

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