router cisco 3800 Multilink

Hi all,
I've 2 cisco routers 3800 and 2 lines 2M, I've setted multilink as follows:

#(conf) interface multilink 1
ip address x.x.x.x x.x.x.x
encaplulation ppp
ppp multilink
crypto map xxxx
service-policy output xxx

#(conf) controller E1 0/0/0
channel-group 0 unframed


#(conf) controller E1 0/1/0
channel-group 1 unframed

#(conf) interface serial0/0/0:0
no ip address
keepalive
encapsulation ppp
multilink-group 1
bandwidth 2048

#(conf) interface serial0/1/0:1
no ip address
keepalive
encapsulation ppp
multilink-group 1
bandwidth 2048



I set 2 different channel group for the interfaces or the same one?

thx
Ribe

Ribe