We have just installed an ESI-50 to connect with an ESI-1000 with ESI-LINK. We have done this at a school just to connect an analog paging system to the IP phones at the school for overhead paging. So, we have an ESI-1000 connecting roughly 300 IP phones at 5 different schools and have installed a 50 at one of the schools just to connect to analog paging through an open CO line port and allow the IP phones to page overhead through an ESI-LINK speed dial to that CO line. The ESI-LINK is working correctly and you can page overhead correctly however there is a long delay after you press the speed dial before the paging system answers. It's like it takes the system 8 seconds to dial back through the ESI-LINK connection to access the paging? They are not happy with this in the event of a lockdown. I have tested the connections at both locations and both are over 100 meg down and 25 meg up and the latency doesn't seem to be an issue? Is there anything ESI can adjust to shorten the delay?