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Most types of fax machines work with VoIP, but not all. Here are some things you’re going to want to check to help you troubleshoot.

While modems were created to be used on the traditional telephony network, they can be made to work with Voice over Internet Protocol (VoIP). Check out these troubleshooting tips to help ensure that your modem can work correctly with VoIP.

Follow these instructions to configure the profile rule for your Cisco SPA3102 ATA. It has one analog FXS port and one FXO port.

Follow these instructions to configure the profile rule for your Grandstream HT503 ATA. It provides one analog FXS port and one FXO port.

Follow these instructions to configure the profile rule for your Cisco SPA122 ATA. It has one analog FXS port and one FXO port.

Follow these instructions to configure the profile rule for your Grandstream HT813 ATA (analog termination adapter). It provides one analog FXS port and one FXO port.

You can occasionally run into problems when you use a point of sale machine with VoIP. A POS machine may fail to connect or can’t find a valid number to complete a transaction. Here are some things you’re going to want to check to help ensure that your POS machine can work correctly with VoIP.

A TTY machine can work with VoIP and the TRS service for customers who are deaf, hard of hearing, or have speech disabilities using either standard or specially designed phone equipment. Here are some things you’re going to want to check to help ensure that your TTY machine and TRS can work correctly with VoIP.