Ring Hunt not Working

We have a major issue, recently we have had a lot of customer complaining that they cannot call in. What I have found is that if I have a ring group with the ring mode set to hunt,

for example

100
101
102

etc,

If the first phone (100) has lost its registration or turned off. The call does not failover to the next extension. I have tested this with numerous ring groups. can someone please investigate.
thank you.

This post has been edited 1 time(s), it was last edited by geo on 21.08.2007 at 19:10.

Ring Group startegy

I believe you should change the "ring strategy" of your ring group from "hunt" to "memoryhunt".

That way an incoming call would not only ring a single extension at a time, but it would also ring the rest of the extensions depending on the specified ring time (max 60 sec).

The alternative would be to set the ring strategy to ringall which would allow you not to loose any calls, even if all but one extensions lose connectivity. You should also consider setting up a Classic extension and set it as the "Destination if no answer" of the ring group.

Thanks for your reply, maybe I did not explain myself properly.

We are having a lot of calls dropped, when the caller calls in you get no ring tone for about 15 seconds then the line goes dead with a constant beep noise.

A seperate issue maybe related is we get the same effect if the first extension in a hunt group is turned off. I believe that that is the group is set to hunt and the first extension is "not connected" then it should ring on the next in the list and so on.

We also keep getting, at least once a day some of the extensions fail to dial out and we get "Reorder" shown on the phones display. A reboot of the phones fixes the issue and then they are fine for about a day and then it happens again.

The phones are Cisco 7940 with the latest SIP firmware.

Thanks for your help.

Reading through your posting, I can identify three issues, with the last one being the key.

• Issue #3: "We also keep getting, at least once a day some of the extensions fail to dial out and we get "Reorder" shown on the phones display. A reboot of the phones fixes the issue and then they are fine for about a day and then it happens again."

Your IP phones loose their registration, and until you reboot them they can neither accept inbound calls nor dial outbound calls. By the way is this done from the browser interface, or is a hardware reset required? I am pretty sure they are placed behind at least one firewall with NAT, and you might need to shorten the re-registration interval, in order to minimize its' effect.


• Issue #2: "A separate issue maybe related is we get the same effect if the first extension in a hunt group is turned off. I believe that is the group is set to hunt and the first extension is "not connected" then it should ring on the next in the list and so on."

Change the ring strategy from hunt to either ringall or memoryhunt, and verify the results. I believe the hunt ring strategy will ring the following extension on the next call, not on the same call.


• Issue #1: "We are having a lot of calls dropped, when the caller calls in you get no ring tone for about 15 seconds then the line goes dead with a constant beep noise."

Can you verify if the calls are delivered to the PBXes server, by looking at the CDRs of the DID provider? Do these CDRs match the ones in the Call Monitor? If the calls are important and the phones keep loosing their registration, change the ring strategy on all the ring-groups to ringall. That way the calls will be delivered to any phone still registered.