MAC mirroring on 3com 4200G

[forrie]

We have about 23 VoIP phones that I need to set up mirroring for on a 4200G switch for technical monitoring and diagnosis. The brand has the same three HEX numbers, but the documentation doesn't really say much about mirroring multiple MACs or whether I can use just the first three HEX numbers to match all of them in the mirror-group.

I need to set this up pretty quickly; I wonder if someone here can comment on how to accomplish this.

There is only one VLAN on the switch (the entire switch).


Thanks!