Indirectly! It negotiates a reasonable, stable Target NM, which in turn determines the sync speed.
The IP Profile is auto calculated from the sync, and its history, and on 21CN WBC is usually an immediately responsive 88.2% of sync.
The DLM will not retrain unless the line goes unstable and disconnects.
It is no use quoting the sync speed w/out the corresponding NM (and even the attn. if that ever changes).
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 19 Meg WBC