[Asterisk-Users] Ring Voltage Supplied by Wildcard TDM400P REV E/F& AUTO FXS/DPO

[Timothy Costello]

On Jan 11, 2005, at 11:42 AM, Jim Van Meggelen wrote:
> Peter Svensson wrote:
>> On Tue, 11 Jan 2005, Jim Van Meggelen wrote:
>>> asterisk-users-bounces at lists.digium.com wrote:
>>>> I'm trying to connect a TDM400P with an FXS module to a Valcom
>>>> V-9940 Paging adaptor. This port on the TDM400P was connected to a
>>>> 2500 Set and was working I just re-connected it to the Valcom (which
>>>> is known to work on a Telco POTS line) and its not picking up.  The
>>>> Valcom docs say it need a minimum of 75 Volts at 20-30 Hz to
>>>> recognize a call... So the question is what ring voltage does the
>>>> FXS modules on a TDM400P put out?
>>>
>>> Ultimately, that depends on how much current is being drawn, but my
>>> multimeter reports about 70V on a 6 foot line cord. Generally, I'd
>>> expect an FXS to put out more like 90-110V (that's what my TalkSwitch
>>> supplies).
>>
>> The ring voltage can be configured. Try setting the module parameter
>> "boostringer" when the wctdm module is insmod / modprobed.
>
> Which is accomplished in 1.0.x by the following:
>
> # modprobe wcfxs boostringer=1
>
> And in CVS HEAD (I assume, as I haven't tested this) by:
>
> # modprobe wctdm boostringer=1
>
> Who, exactly, Boo Stringer is has not yet been determined.
>
> Boo Radley? NO, Boo Stringer.
>
> (Sorry for the pun, folks, but I will now never forget this parameter
> name).

Or adding the line:
options wctdm boostringer=1

to the file /etc/modules.conf

Thank you to all who replied, I will be trying this out as soon as I 
can down the system to reload the modules.

Later;
Tim