These commands work for Kramer VS-88-HDCP and VS-88-DVI 8x8 Matrix
I believe the matrix device in Catalyst also works
Check that the correct protocol is set correctly on the Matrix - some have multiple protocols that have to be chosen (see manual for details)

Ensure you set the IP address, subnet and port to the correct settings using the Kramer IP tool
Ensure Catalyst is within the same range
Ensure you setup a Catalyst TCPIP port with the same information as the matrix including the port as TCP (default is 5000)

************************************************** ****
Kramer 8x8
P 5000

Recall Preset 1
[04818081]

Recall Preset 2
[04828081]

Recall Preset 3
[04838081]


Regards

Simon