[Serusers] Linksys RT31 NA??

[Sebastian Milioto - INTERCOM]

I understand there are 2 kind of Linksys RT31p2. A NA version, and non NA
version.
Anybody knows what's the difference? I have a Linksys RT31 but I can't
configure the "interdigit timer" and all other telephony related parameters.

I´d like to know what is the version which permits to configure all the
telephony parameters? Do you know what is it?

Thanks in advance

Sebastian