SLUI prompts:

Slui.exe can be passed a numeric value to force a certain type of activation. Phone-based activation is 4. For example,

open a command prompt then type: slui 4

Other values include:

1 – Show activation status
2 – Activation via the Internet
3 – Prompt for a new key
4 – Launch activation via phone
5 – Prompt for activation and show all methods except Internet
6 – Launch activation wizard
7 – Prompt for activation emulating last day to activate