Gateway Mobile Switching Center (GMSC)

A Powerful, Yet Cost-Effective Gateway MSC Solution for MVNOs

Modulo’s Gateway MSC (GMSC) for MVNOs enables fast and easy interconnection between the MVNO’s host network’s MSC and neighboring networks. Our GMSC solution allows MVNOs to perform seamless call routing to/from outside their mobile network using protocols such as ISUP, ISDN, CAS and all types of SIP.


The ongoing, fast-paced growth in mobile data traffic warrant significant changes in mobile network architecture. MVNOs that want to keep up with the frequent changes will have to adapt. Mobile operators will need to be more flexible, more easily and quickly scalable and more cost-effective. Modulo’s Gateway MSC solution can be deployed on any standard Linux server or on any popular cloud service, such as AWS, Microsoft Azure, Google Cloud…


Small MVNOs depend on their host network for many of their network functions. As their subscriber base grows, many MVNOs want to retain more control of their network and lower their OpEx to facilitate faster growth. Deploying a reliable, scalable and cost-effective GMSC is a great opportunity for expanding MVNOs to decrease their dependency on their host network and lower their call-routing costs.


In times where changes are frequent in the telecom world, flexibility and interoperability are key success factors. Modulo’s GMSC includes a MAP interface with the HLR for call routing, an INAP interface for mobile number portability, and a CAP (CAMEL) or Diameter interface for online charging and IN Services. It is a Modular Product, so if you only need certain modules, the GMSC can be provided with only the necessary interfaces. Individual modules can be purchased separately as well.

Interested in the Gateway MSC solution?

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    About Modulo Communication Systems

    Modulo Communication Systems Ltd is a Telecom Solution Center. Modulo provides customers with the best and most cost-effective modern and converged telecom solutions in the market.

    Modulo specializes in mobile-network technology, including specifications such as LTE, WebRTC, IMS, and Diameter, as well as legacy protocols such as 3G/UMTS, GSM, SIP, SS7 and even Analog protocols. We provide services in design, development, integration, QA, maintenance and training for standard or customized telecom solutions, based on the most competitive off-the-shelf telecom products from market-leader suppliers.

    We deliver a complete set of services for our products and solutions, including building blocks. Our services vary from simple reselling to fully-customized solutions through delivery, support, solution design, integration, development, maintenance, and training.

    For more information, feel free to contact us at