02-15-2008 12:42 AM - edited 03-15-2019 08:51 AM
Hi All,
Somebody knows if there's any limitations on the maximum number of IP Phones sharing the same line?
It seems that, having a large number of IP Phones sharing the same extension, some of them don't ring with an incoming call for the shared line...
Thanks
Regards
Roberto
02-15-2008 05:48 AM
Hi Roberto,
Looking at the CCM 4.2(3) documentation I can't see any mention of limitations.
The only workaround I could suggest is to add the phones to a Line Group and make the current Shared Line DN a Hunt-Pilot. You could then use the broadcast distribution algorithm so all phones would ring at once.
Unfortunately if they definately require shared lines, I think your best option here would be to contact TAC.
Sorry I couldn't be of more assistance, but if it has helped please rate this post.
Regards,
Dave
02-15-2008 06:08 AM
Hi Guys,
I remeber reading about a bug that did impact Shared Lines if there were more than 12 phones sharing the DN. I can't seem to locate it anymore :( Roberto, can you tell us what IP Phone model these are, what Firmware and if any 7914's are in play?
Thanks,
Rob
02-15-2008 06:36 AM
Hi,
I got the following infos:
maximum IP Phones sharing the line: 9
IP Phones that don't ring: 1 or 2
Model 7961 with 7914.
7961 firmware: 8.2.2SR1S
7914 firmware: S00105000300
Thanks
ROberto
02-15-2008 06:44 AM
Hi Roberto,
Perfect! Can you please check and see if there are any calls on the 7914 when these phones don't ring the Shared Line.
Thanks,
Rob
02-15-2008 07:02 AM
Hi Rob,
yes, you're right, even if at least in one occasion there was no active calls on 7914.
Thanks
Roberto
02-15-2008 10:50 AM
Hi Roberto,
I thought it may have been this Bug, but it's not exact :(
CSCsb12448 Bug Details
7960-7914 does not ring on incoming call if there is active call on 7914
Symptom:
7960 with sidecar will not ring when call comes on prime line if there is an existing call in progress on sidecar.
Conditions:
This behavior is seen in all versions of callmanager. 7960 has a sidecar. Lines on sidecar are shared with other 7960 phones. Sidecar lines are configued to flash only when new calls come in.
New call comes in and line on side car flashes. While this call is in progress, if there was another call that came for prime line of 7960, it will flash even though its configured to ring.
Workaround:
There is no workaround. The only way to know that new call is coming is by visually checking for any flashing.
1st Found-In
3.3
4.0
4.1
Fixed-In
4.1(3)ES15
5.0(1.50.7)
5.0(1.1000.2)
4.2(0.387)
4.1(2)ES41
Hope this helps! Perhaps a Tac Case is in order.
Rob
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