two line with different speed and PCC

RouterOS Beginner Basics
1

i have two line with different speed
first line =====>2 mb/s
second line ====>512 kb/s
i want to use pcc method to utilize the all speed of two lines i.e 2.5mb/s

what i need to do this?

2

Follow the tutorial on the wiki but pretend you have 5 links rather than 2. Assign the same routing mark on 4 of them. That way, 4/5 of your connections will use the 2m link and 1/5 of your connections will use the 512k link.

3

how

4

http://wiki.mikrotik.com/wiki/PCC

Copy the example and adjust it to your situation, replacing

add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses:2/0 \
    action=mark-connection new-connection-mark=wlan1_conn passthrough=yes
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses:2/1 \
    action=mark-connection new-connection-mark=wlan2_conn passthrough=yes

with

add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses:5/0 \
    action=mark-connection new-connection-mark=wlan1_conn passthrough=yes
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses:5/1 \
    action=mark-connection new-connection-mark=wlan1_conn passthrough=yes
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses:5/2 \
    action=mark-connection new-connection-mark=wlan1_conn passthrough=yes
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses:5/3 \
    action=mark-connection new-connection-mark=wlan1_conn passthrough=yes
add chain=prerouting dst-address-type=!local in-interface=Local per-connection-classifier=both-addresses:5/4 \
    action=mark-connection new-connection-mark=wlan2_conn passthrough=yes