Archived from groups: alt.cellular.gsm (More info?)
"Patrick Lam" <email@example.com> wrote in message
> Dear all,
> I am just wondering what protocol the 3G phones use to anchor to an access
> router (or SGSN) at power on?
They attach using the GPRS Mobility Management protocol. Following an attach
they aquire an IP address using the Session Management protocol (PDP context