We have got 2 PBX, with no overlapping queues nor agents, and many of them configured as remote agents.
Recently, we enlarged all this queues to 3 times their original size (also being the remote agents 3 times more in every queue) and we have detected that, for any call that goes to the remote server due to local agents being busy, those calls rings for just 2-4 seconds, instead of the 15 defined by queue.
General settings default ringtime is defined at 15 too, and extensions ringtime to default.
Due to my lack of knowledge about PBX, im not able to track it further, any suggestion why is this happening or how could I diagnose it?
We have tested, creating a new queue, being just 1 remote agent in that queue, with no locals, that calls rings for about 9-13 secs, whenever we add the bulk, it gets lowered to 2-7 secs.
Machine overall perfomance is good (no more than 35% CPU 70% RAM at peak times).
Thanks for your help.