Annex M will lower SNR..... so u can try Annex A.......
Use Annex M only if u need the 2Mbps upload speed...... or use 1Mbps upload on Annex A
Keep an eye on the max rates...... if downstream max rate is very close to 8Mbps then switch to Annex A n chk....
Use Annex M only if u need the 2Mbps upload speed...... or use 1Mbps upload on Annex A
Keep an eye on the max rates...... if downstream max rate is very close to 8Mbps then switch to Annex A n chk....