Environment:<br><br>CCM 4.1, Unity version 4 also.<br>3560s, 2801s. 6 buildings all linked by fiber. Each building has a 2801 and 3560.<br>Total phone count: 60, mostly 7940s, some 7912s, a few 7960s.<br><br>All fiber runs back to main location where it joins the network through GBICs on 3560s.<br>
At the main location we have a PRI that goes into a 2801.<br><br>Problem: 3 times in the last year, we will get a situation that goes like this:<br>Pressing 9 to dial out, and dialing your number: Phone shows call is completed, starts counting the seconds, but you hear nothing.<br>
If we call another extension internally, they will hear us but we cannot hear them.<br>If someone calls in from outside and gets the auto attendant, no input is accepted, the attendant just keeps going. (i.e. Press 2 for this, she just keeps going, you can press as many buttons as you like, no change).<br>
<br>The solution seems to be to reboot the main 2801 with the PRI. I am not sure why this would cure internal extension-to-extension calls, but it does. My facility runs 24 hours a day, so a reboot is never a good thing.<br>
<br>Where should I start looking? Broadcast storms? Is this a sort of known bug that Cisco might have fixed somewhere? Anything in Unity or CCM I should look at? Counters on ports?<br><br>Would appreciate any direction at all!<br>
<br>Todd<br>