With demands for smooth communication services on the rise, more and more companies are moving away from traditional communication networks and are changing course to more unified systems. Companies such as AT&T are slowly pushing out time-division multiplexing services (or TDM), and the rise of IP based services, such as SIP trunking, and the transition to UC systems is becoming more and more common.

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These transitions never happen overnight but understanding the differences between TDM vs SIP trunking and having a smooth transition plan can make things a lot simpler. This article will explain the advantages of moving from TDM trunks to SIP trunks and will guide you through the process of creating a seamless transition plan for your business.


The main advantage of moving to SIP trunks is that they can provide significantly more flexibility for your communication system, which can benefit your business. Unlike traditional TDM trunks, you have the option to purchase as many, or as few, SIP lines as you need, which means that you will not end up paying for more than you require.

Lower Costs

The SIP trunk TDM switch could save your business a lot of money! The cost per call is much lower with SIP lines, and the billing system is much simpler- you just have to pay one monthly price for several minutes from your service provider.


SIP networks make it easy for users to be added in and taken out without any physical infrastructure. This is excellent for larger businesses with higher staff turnover or new positions being filled each day. SIP makes it easy to scale up your business and introduce new users into your communication system.

How To Build A Seamless Transition Plan

SIP trunking is the best way to begin transitioning from traditional TDM-based services to IP-based services slowly. With the right transition plan, the process can be done fairly easily and at a low cost.

Evaluate Critical Services

The first step of your transition should be to evaluate which SIP services will most benefit your business. This allows for more efficient prioritisation.

Decide How To Route Traffic From TDM Applications

Before beginning the switching process, you will need to determine how to route traffic from your traditional TDM applications to your new system. This aspect could include fax lines, point of scale credit authorisation and much more.

Seek Support

Transitioning your entire communication network is a large-scale job that could require the skills of an expert to run smoothly. It might be worth looking for a service provider that offers multiple support options for you to use that could include in-person support or remote services. Our IT services are always happy to offer their support and guidance during any step of your transition.

Understand Interaction

You must understand exactly how the new IP-based services will interact with your business applications. Understanding this will make it far easier to create an effective integration plan and will allow you to be aware of any significant changes.

If you’re looking for a communications provider that you can rely on, get in touch with our team at Staveley Communications today.


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