Call Pickup Not Working

I have FreePBX box setup without any problem, everything is working except for the call pickup.

I tried to use the code *8 followed by the extension, or ** followed by extension seems not to work at all.

I am using Linksys ATA Adapter PAP2T which i have emptied the codec in the linksys box itself.

Anyone else having the same issue?

Have you configured your extensions with matching ‘call group’ and ‘pickup group’? If so, provide a call trace when you dial *8, it may provide a clue.