What does ttyUSB mean? Sometimes, the embedded microcontroller does not come with a hardware USB interface. While it is possible to use a software-only USB stack, the additional constraints put onto the CPU and the usually small storage size often lead board designers to include a dedicated UART to USB bridge.
Because of a busy weekend I didn't really follow up other than via emails and this still hasn't been resolved. The consistent word from them was that porting a number sometimes takes 24 to 48 hours.. I spoke to a rep by phone today who promised it would be done within 2 to 4 hours.. It wasn't.
1 O2 will provide your Port Authorisation Code (P.A.C) either over the phone, via email, by SMS text message, or in a letter posted to your address. 2  A PAC code is valid for 30 days. 3  If you don't use it within thirty days it will expire and you will need to request a new one.sk for your Port Authorisation Code (PAC) from O2 customer services by contacting them, either from your 02 mobile phone on 4445 for Pay & Go, or 202 for Pay Monthly contracts.