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Modem applications

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Switching modem applications to IP

Applications that communicate over the traditional fixed network via voice modem are affected by the switch to IP. Most lines were switched to IP by the end of 2017. At the beginning of 2018, the full migration of customer lines to IP began across Switzerland to help drive the phasing out of the old infrastructure in those areas. Customers who did not migrate to an IP product then should do so as quickly as possible. Swisscom will provide them with support. All modem applications that are affected need to be modernised in advance to ensure their reliable continued operation.

Frequently asked questions

Which modem applications are affected?

Applications such as alarm systems, franking machines, remote controls, remote monitoring, building services, industrial systems, electricity meters and many others that currently transmit signals with a modem over the traditional fixed network (analogue or ISDN). Many systems are not affected because they only use the mobile network to transmit information or they are already IP compatible.

As an owner, what must I do?

Contact the installer or supplier of your system as early as possible. They will take the necessary steps to ensure the reliable operation of your modem-based systems. The majority of modem applications will still work using the ATA port on the router (analogue telephone adapter). Check operational issues with the manufacturer.

Who is responsible for ensuring that the system runs smoothly?

The system provider is responsible for the smooth running of the system when the end customer migrates to IP. Swisscom supports system providers that require detailed information on operating modems on the IP network.

What do you need to do before switching to IP?

If you are using a modem system that communicates via the fixed network, the IP compatibility of the system needs to be checked before all communication is switched to IP. All systems must switch to IP connections in the next year as Swisscom cannot guarantee the ongoing reliable operation of existing analogue modems over IP.

Transmission solutions for modem applications

Transmission over the fixed IP network and mobile network

Dual solutions are the most reliable; they transmit information primarily via the fixed IP network but also over the mobile network. This is seen as the most reliable means of transmitting information. It is even more reliable than traditional transmission using the fixed network alone. This is type of transmission is particularly recommended for critical systems.

Transmission over the mobile network

A connection with the 3G/4G network is the best option for most applications and is economical and reliable. Wireless communication also reduces installation costs.

Transmission over the fixed IP network

A pure IP connection can be advantageous when it can be integrated easily into the LAN. The application can communicate more easily with other machines in the network or be monitored directly.

Transmission over the fixed VoIP network

Existing modems can often operate reliably on the analogue interface of the router. This can be an expedient solution, particularly for non-critical transmission. The connection needs to be checked regularly.


Switching special applications to IP

Alarm systems, lift phones, fire alarms: all major, and often life-saving special applications which are affected by the switch to All IP. Unlike fixed network connections, we cannot provide customers with direct support because the contracts for these applications are concluded with the respective providers and not with us. Find out more in our video.

Video total length 02:17 min.