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New Member

CUCM 6.1.2 BLF limitations - Max numbers

HI Guys,

Wonder if any of you can help. I am deploying a site of around 400 users with 7961's They use arc during the day but out of hours they want the calls to be routed to a BLF button on each phone. I can set all this up but my question is

Is there a limitation on the number of devices that can monitor a single DN. Has anyone every used the BLF in such a way?

Other options where use a hunt group to everyone but that would be to noisy. Or just a shared line on every ones phone. But again i this will be to noisy as the BLF can just play a beep.

Your speedy response will be appreciated as this is going live Saturday.



Re: CUCM 6.1.2 BLF limitations - Max numbers

Hi Matt,

Let me understand the following:

400 phones will be monitoring 1 single DN in a particular phone?

or whats the intended behaviour.

Let me know so I can search which numbers we have tested.


New Member

Re: CUCM 6.1.2 BLF limitations - Max numbers

Yes they want to use it as a night bell. They want any out of hours call to be answered if anyone is in the office. They have people working all sorts of times. I dont really want to put a shared DN on all the phones or use a Hunt group because of all the ringing and missed call notificatoin.

Thanks for you quick responce