On Christmas Eve we were allowed to leave work earlier than usual.
I tried to telephhone my parents to come and pick me up but all I got was the engaged tone and then the BT Answer service. I left a message on it asking to be picked up at 3 o clock but unfortunately the message didn't get heard until 3.15pm. Fifteen minutes after I had asked to picked up.
In the meantime I had begged a lift from one of my colleagues to get home since I didn't have a clue when my parents would receive the message I had left.
It turned out that my younger siblings were on the internet most of the afternoon. I had told my parents to expect a phone call because I knew there was a chance we'd be let out of work early but unfortunately they didn't keep the kids off the computer.
In this day of mobile phones & BB, i guess most ISP dont see the need for the facility. If the phone is in use on dial up, they sort-of expect that the house being called will have a mobile (or in the case of my sister, 4, one each family member), and if it's BB, then the phone will ring any way.
Sorry, but i guess this is why it's hard to do. Most people dont see a need to be able to do it.