I have been getting more and more cases where a phone loses its connection with the PBX. I get the "Searching for IPU" on display. Changing the card/IPU address the phone is using usually fixes this.
The ports are almost maxed out in the system and I was wondering if this might be the cause for connection issue. We have 8 cards, most of them 16 ports and currently there is only a few open ports available.