Call pickup on BLF not working on 7.72.0.1 [resolved 7.72.0.56.rom]

[temp0001]

After reading the v72 Administrator guide several times, I still am unable to get call pickup working on T2xP phones running v72.

In the v61 firmware, all I needed to do was to set the DSS key type to BLF, and input the extension number in the Value field. It then worked straight away without further configuration. It was easy and fuss free. Why can't v72 be like this?

The instructions for getting the same functionality in v72 are not clear. It talks about Dialog Info Call pickup; I checked this on the phone account and it is enabled. But changing its setting makes no difference.

Then there's something about Directed Call Pickup, but it needs codes/numbers, which I have no idea of what to use. I tried copying some of the examples in the Admin Guide, but they don't work. It also seems that if a DSS key is set as a Directed Pickup key, it no longer works like a BLF key, and worse still, it is unable to pickup a ringing call on the monitored extension.

If I set up a DSS key as a BLF in v72, and I press it when the monitored extension is ringing, I get an "Address incomplete" error message. Above the error message, it shows the extension number being monitored (as if I were calling it). But I get a busy tone and the call is not picked up. What's going on?