A customer wants to add a phone to answer incoming calls to the company. We're keeping on site dispatches to a minimum right now, so I had the customer log into the DCS to add the extension to the Operator Group. We found out the phone is already in the group. Other phones in the group do ring, but not the one in question. The customer mentioned the phone just has a 'Local' key - where others that ring have 2 incoming call keys. Her phone I believe has direct CO appearances.

I wonder if the phone in question isn't ringing because of what keys may be required on the phone? If it is a key layout change or something else, I don't want to task the customer with too much troubleshooting and/or configuration. Hopefully I'll be able to go to the site this week.