TCAP Handover and Relay Configuration

Call Control Framework (CCF) can handover (relay) incoming TCAP messages to another platform if a subscriber can't be found in the MATRIXX database.

CCF can handover incoming TCAP requests for subscribers that MATRIXX cannot find in its subscriber database to another platform for processing. For example, when migrating to the MATRIXX platform, CCF can relay incoming TCAP requests to the incumbent platform for subscribers that have not yet been migrated across. After handover, the incumbent platform processes the TCAP request without any further involvement with MATRIXX.

CCF can perform TCAP handover in a single domain or multi-domain environment. If you enable relay SCCP for the service, CCF hands the message over to another platform based on the configured relay SCCP address. In a multi-domain environment, depending on domain resolution configuration, if MATRIXX can't find a subscriber in the MATRIXX database, the incoming TCAP message is either consumed or forwarded to an available MATRIXX sub-domain. CCF can then send the message to the configured relay SCCP address.

In a multi-domain environment, domain resolution behavior is based on the following cache_fail_perform_domain_resolution and cache_fail_behaviour configuration options set in the mtx_config.xml configuration file:
  • If cache_fail_perform_domain_resolution = 0, domain resolution is not performed. Then, if cache_fail_behaviour is set to:
    • -1 — CCF sends the TCAP message to the default sub-domain. If you enabled relay SCCP for the service, CCF sends the message to the relay SCCP address configured for the service.
    • -2 — The TCAP message is consumed.
  • If cache_fail_perform_domain_resolution = 1, domain resolution is attempted. If unsuccessful, and cache_fail_behaviour is set to:
    • -1 — CCF sends the TCAP message to the default sub-domain. If you enabled relay SCCP for the service, CCF sends the message to the relay SCCP address configured for the service.
    • -2 — TCAP message is consumed.
    • -3 — The TCAP message is round robined to the next sub-domain ID in the list of all sub-domain IDs. If you enabled relay SCCP for the service, CCF sends the message to the relay SCCP address configured for the service.
During engine configuration, you can enable SCCP relay, and define the relay SCCP address for the following services:
  • Voice services
  • SMS services
  • USSD services