[vdr] Same Channel from DVB-C, DVB-T and channels.conf

[Tommi Lundell]

Hello

I'm cannot find information how i can tell to vdr that example following 
channels are one and same. (Is that even possible?)

Example 1:
YLE 
TV1;YLE:562000000:I0C23D23M64B8T8G8Y0:T:0:512+128:650=fin:2321:0:17:8438:4097:0
and
TV1;YLE:274000:C0M128:C:6900:512+128:650=fin:2321:0:17:0:1:0

Example 2:
Subtv;SubTV 
Oy:658000000:I0C23D23M64B8T8G8Y0:T:0:353:609=fin:865:0:97:8438:8193:0
and
subtv;Citytv Oy:282000:C0M128:C:6900:353:609=fin:865:0:97:0:2:0

And is there some way possible to prefer cable channels in recordings?

Tommi