From: arjan tijms <arjan.tijms_at_gmail.com>
Date: Mon, 22 Jun 2015 23:28:28 +0200

On Mon, Jun 22, 2015 at 9:54 AM, Werner Keil <werner.keil_at_gmail.com> wrote:
> Same as Ivar
>
> Both seem OK, but in doubt "caller" should be fine.

Seems a pattern is emerging ;)

The list of terms:

1. user (principal)
2. caller (principal)
3. ???

5 out of 14 voted:

Pedro Igor: caller
Arjan Tijms: caller
Rudy De Busscher: caller
Ivar Grimstad: caller
Werner Keil: caller

Kind regards,
Arjan Tijms