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23 Jan New Restcomm SMSC Gateway 7.4 release supports Horizontal Scalability!

This Restcomm SMSC Gateway 7.4 release is based on the community version with additional improvements for performance, functionality and stability. Most importantly, this new release supports Graceful Shutdown and Horizontal Scalability through SS7 nodes clustering with the recently released Restcomm Load Balancer 12.0 configured as a Front End Processor (FEP).

The new SMSC Gateway 7.4 reports load and health status to the Load Balancer 12.0 over TCAP, which then can route requests to other SMS gateways in the cluster based on poor health or overload conditions. It also supports graceful shutdown for rolling upgrades and maintenance without incurring downtime.

In addition, the new release supports Wildfly 10, which reduces deployment costs. The release also brings new mproc rules, CDR logging enhancements (for better statistics reporting of the SMSC Gateway 7.4 server), and several home routing (HR) improvements to simplify deployment. There are also several bug fixes to make configuring and managing the SMSC Gateway 7.4 easier.


The release contains following improvements:

  • Active-Active clustering with Restcomm Load Balancer 12.0 (TCAP/FEP mode)
  • Graceful Shutdown with Restcomm Load Balancer 12.0 (TCAP/FEP mode)
  • Wildfly 10 support to lower deployment costs;
  • Switched to SMPP stack and RA 7.1.1 which add significant improvements including
    • congestion control for outgoing message flow for SMPP connector
    • async message sending at stack level
    • possibility of limitation of sent messages for a same destination address
    • code stability updates / bugs fixes
    • added error counters per ESME, cluster, channelID and at the server level
  • Updating of mproc rules part:
    • Added conditions: percent
    • Added actions: removedestdigprefix, mtlocalsccpgt, mtremotesccptt, dropOnArrival, rejectOnArrival
  • CDR improvements:
    • added fields: DeliveryReceiptMessageStatus, DeliveryReceiptMessageStateTlv, DeliveryReceiptMessageErr, msgParts, PROCESSING_TIME,SCHEDULE_DELIVERY_DELAY,DELIVERY_COUNT
    • added detailed CDRs for some events in HTTP and SMPP processing
    • added generation of CDRs for rejected messages
  • Add a counter for calculation of pending messages count in Cassandra database
  • Added configuration for permanent / temporary failure case for MT procedure – MAP error message smDeliveryFailure (depending on cause and sms tpdu TP-Failure-Cause)
  • Home Routing improvement: SMSC GW can now correctly listen for two SSN for incoming messages playing both SMSC and HLR roles
  • Fixing of CLI bugs, it now works when receiving long responses (for example a big list of EMSEs)
  • Numerous minor bug fixes;

For a more detailed changelog, please contact us through the Customer Portal or contact Sales.


Check out the latest Restcomm online documentation for SMSC Gateway information. Beginners can read the Installation Guide and User Guide to get started. Restcomm SMSC Gateway customers can download binary files from  from the Customer Portal or contact Sales.

We encourage you to help us improve the project by asking questions and reporting bugs for the Restcomm SMSC Gateway or via Zendesk.

Your participation and feedback is highly appreciated!

We would love for you to be a part of the Open Source GitHub Restcomm project family by contributing patches, documentation or tests for the community version of the SMSC Gateway. To get involved or to learn more about this process, please read our Open Source Playbook to get started. We also encourage you to check out the SMSC Gateway project Roadmap where we have already marked issues with “Help Wanted”.

To learn more about the Restcomm cPaaS platform and to see what the team has been up to on your behalf, please follow our blog.

For commercial inquiries about Restcomm SMSC Gateway 7.4, or our other products, please contact Sales or call us at +1 (650) 263 6146.


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