External Bell on ATA

[systemtek]

Hi I have read the following post ( https://supportforums.cisco.com/message/1238164#1238164

) we are replacing analogue phones with Cisco phones.  Some places have a external bell connected to the phone so they can hear it ring outside the office etc.  According to various posts on the net it is possibe to do this with a ATA and it sounds a good idea.  However i am unable to get a external bell to work on a ATA.  I have set a test ATA up and it works ok with a analogue phone but the bell wont work.  If i try the bell back in a analogue line it works ok so i know the bell is ok.  Is there anything that needs to be changed on the ATA, router or in Cisco call manager for this to work ?  If it helps i am in the UK and i know there is a difference between wiring etc so wondered if the ATA needs a ring wire or something ?

Thanks

[Nkechi Latunji]

I have exactly   the same issue. Has anyone got this to work using ATA with an external bell

[barry]

Yes, I've got Doro Ring Plus units to work with no issues with an ATA.

This was on CUCME however, I can't think of any reasons why it wouldn't work.

From memory we had to ensure that the UK locale was enabled on the ATA/line to ensure we got the correct ring (dual rings) but other than that everything worked ok.

HFH. Barry

[don_crowder]

How old is the external bell? It may be that the ATA does not supply enough ring voltage. I'm not sure what the specs are on the ATA, but a POTS line generates ~ 90VAC. I would imagine an older external ringer would probably be finicky about ring voltage, but thats just a hunch.

Regards,

Don