Crestron / AMX connection problems to Shure products

Date Updated: June 25, 2019 FAQ #4977
I'm having difficulties with the Control Strings for the SCM820. Is there a way to troubleshoot?

This answer applies to all Shure products that connect to AMX/Crestron via ethernet, such as the SCM820, MXWAPT4, MXWAPT8, MXA310, MXA910, ANI4IN, ANI4OUT, UR4D, AXT400, ULXD4D, ULXD4Q, ULXD4, QLXD4.

First, make certain you are using the correct port, as specified in the Shure documentation. Also, make certain the SCM820 and the Crestron/AMX are in the same network subnet.

This functionality is always on and can not be turned off or defeated on the Shure product.

Shure commands do not use line endings, such as CR or LF.

To test the Shure product, a program called PuTTY can be used on your computer. Make certain your computer and the Shure product are on the same network subnet. The IP address of the computer and the Shure product should be very similar. For this example, the IP addresses are:
In PuTTY, enter the IP address of the Shure Product. Change the connection type to "Raw", and enter the correct Port number.
Click OPEN.
If you mute a channel in the GUI or on the front panel, the SCM820 will send REP command strings.
You can also directly type commands, such as getting the channel name.
The SCM820 will respond with the channel name.