HI Nicolas,
Thanks for the reply - I have looked at those suggested posts and they don't seem to be relevant to our particular issue, apologies for the misleading subject as this seemed to be a result of the actual issue:
It looks as though FOP2 and PBX cannot handle two extensions pointing to the same virtual destination - as soon as we modified the destination number of one of the extensions and refreshed the FOP buttons it was able to 'see' both extensions displayed correctly within FOP2, though they were pointing to different external numbers.
There was an issue in the script on the back end which was preventing the correct config upload and we corrected that. However the above issue persists. Is this by design or do you know of another workaround? If so, I appreciate I may need to repost with a more relevant subject!
Thanks
Joe