We are starting to see a number of DSL MAX sites running 857 routers becoming unstable, constant loss of sync, re-authentications etc - sometimes up to 400 a day. We called out the Telco (BT) and they tested the line as OK and stable. After swapping the kit three times I spoke with TAC and they provided me with a newer version of the ATM Firmware (2.6.4) - This fixes the problem and stabilises the line.
My question is - Has anyone else seen this problem in the UK? Are BT rolling out a code upgrade to their DSLAMs or changing some hardware? Is this likely to affect all UK DSL MAX connections in the near future?