We have published a blog on Cisco site related to CCME / IP Phone configuration , to help a wider community .

CCME : Define FXO trunk for extensions

https://supportforums.cisco.com/blog/12518831/ccme-define-fxo-trunk-extensions

We are now active on both Cisco and Avaya forums , and adviced our staff to publish solutions and troubleshooting steps that they find in Doha to publish on both sites . Will continue to publish here for our Doha Qatar clients .