DV130 VoIP configuration best practice

Hi all,

Not very familiar with best practice for router configuration with a VoIP setup, and was wondering with your average modem, in this case a DV130, is there much that can be done to optimize VoIP traffic, or is a more advanced router with decent QoS etc really required?

I would always make sure SIP ALG is disabled, but other than that I'm not too sure what else would normally be done.

Thanks!