Re: codeless phone
Recording a call is illegal in any country without informing the other party. But you can still do it if you have speaker phone. Switch to Speaker mode and press record on recording device. Unless you want to do some sophisticated recording, for that you can get equipment from almost anywhere.
A word of Caution. Many service provider keep track of line voltage, direct recording attempt could change the line voltage and can triger an investigation.
The other simple way is that divert your calls to Mobile when you expect a call and then record.