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#599922 - 04/15/16 02:25 PM 3Com paging problems in IP-on-the-fly
Jason_D Offline
Member

Registered: 04/15/16
Posts: 2
Loc: Indiana
Hi,

I have a NBX v5000 running 6.5.22 patch 03. When the system's network protocol is to ethernet only page zones work. I had to change the network protocol to IP-on-the-fly so I can put a 3Com phone at a remote site over a site to site VPN. As soon as I changed the protocol to IP-on-the-fly and reboot the NBX paging broke. When I dial the page zone the name shows on the screen but there is no tone indicate a page is happening. I have seen conflicting advice about IGMP snooping. Currently I have IGMP snooping and querying enabled and things seem to work, the remote phone can make and receive calls and paging works. However after awhile paging stops working. The remote phone was a brand new 3c10401 and I have switched to a 3c10402a to see if the phone was the problem, it isn't. I have replaced the 3Com 4400 at the remote site and that hasn't changed anything. I need a 3com phone at the remote site but having paging break at random times is not acceptable. The site to site VPN is configured to allow multicast. What should I be looking at?

Thanks,
Jason

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#599941 - 04/16/16 02:33 PM Re: 3Com paging problems in IP-on-the-fly [Re: Jason_D]
Meyery2k Offline

Member
*****

Registered: 12/10/12
Posts: 210
Loc: Hawaii
Paging and conferencing on an IP-enabled 3Com. That brings back memories of many unpleasant hours spent trying to get this to work. We still have a multi branch site with PTP T1's and we had to enable IP multicast routing, make sure IP multicast dense mode was configured and then add EVERY IP multicast group listed in the programming. We finally got that working consistently.

One of the original 3COM engineers will help you for a fee. He has helped me out of some jams.

He can actually recreate a hard drive for you as a cold spare which can give you peace of mind.

Of course, I can't find his contact info but if you are interested let me know and I will find it to PM you. Multicasting is your devil in that system though. ~ Mike
_________________________
Michael Meyer

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#600020 - 04/19/16 07:54 AM Re: 3Com paging problems in IP-on-the-fly [Re: Meyery2k]
Jason_D Offline
Member

Registered: 04/15/16
Posts: 2
Loc: Indiana
Hi Mike,

Thank you for the information. I have sent you a PM. This is a real challenge. The documentation on multicast is horrible.

Thanks,
Jason

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