Annex M router

Annex A is standard ADSL2+. If it does M it'll almost certainly do A.

The 877 I've got does A, but not M. There's a model that does M, but I can't comment on its performance.
 
if i go for be unlimited pro package which has the 2.5mbs up stream will that router be sufficent to support 4 IP phones?
 
Should be. 4 VoIP streams shouldn't be much of a stress for any router, unless you use some protocol with an obscenely high bitrate.
 
Well any router will be fine with VOIP, it's just a few standard connections. But you'll want one with good QoS so they're not interrupted, the Daytreks have good QoS supposedly. The various Speedtouch's Be* supply have some QoS but I don't know if it's any good.
 
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