I have a strange problem with shared lines on 7931 phones. Each team (and there are many of them) has a group of UDPs which are almost identical in terms of line presentations. So for example there may be 10 phones all configured with 100,101,102,103,104,105,106,107,108 etc. DN 100 on line 1 would be a shared number that rings on all handsets with max calls value set to say 10. The rest of the DNs are the personal lines with Max calls/Busy trigger set to 2/1. The ringer is set to ring only on the relevant user's extension.
What I am seeing is that on some group UDPs a lot of the lines are not appearing and on some of them none of them appear at all. When I look in CCMadmin they are all present. After a lot of frustration I found that if I update every extension on every UDP (Using BAT as these fields do not propogate to shared lines) with what seems to be a random value for busy trigger and max calls then eventually I get to see the lines. I understand that the maximum calls value for the 7931 is 48 and I know I am not hitting this limit.
I need to understand why this is happening.
Could it be something to do with the number of DNs in a profile and the number of profiles that the DN is associated to?
I had 8 UDPs working perfectly each of which included 8 lines. When I added the 9th UDP containing the same lines I could see no lines when I logged in. MC/BT were set to 10/10 on line 1 and 2/1 on the rest. When I updated DN 1 to 11/10 it started to work and immediately all of the lines appeared.
If anybody can make any sense from this then please let me know!
Thanks for your time in reading this.