Re: Osborne-Hoffman 2000E receiver problem

[chasbo@xxxxxxxxx]

On Sat, 28 Mar 2015 09:54:07 -0700, John Sowden
<jsowden@xxxxxxxxxxxxxxxxxx> wrote:

>Before your last comment regarding the buzzer,my thought was that the
>receiver ring detect circuit is not working.  If the buzzer is connected
>across the phone with, with applicable capacitor or course, the receiver
>may still not be detecting ring, just the buzzer is working.  Check the
>no. of rings to answer in programming.  Meter the phone line on ringing
>to confirm it is 90v AC (approx.).  Switch the phone lines to confirm
>that is is the receiver, not the phone lines.
>Trace the wiring from the coil of the line seizure relay, backwards,  to
>see if there is a hardware issue re: the relay not seizing.  If there
>are duplicate circuits for each phone line, compare the circuits with a
>meter to determine the difference.  If the receiver uses line cards,
>swap them.
>
>These are the ones that jump out at me.  As you dive in, you might find
>other related issues,
>
>John
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>On 03/24/2015 11:39 PM, mleuck wrote:
>> On Tuesday, March 24, 2015 at 6:39:19 PM UTC-5, cha...@xxxxxxxxx wrote:
>>> To All:
>>>
>>> Osborne-Hoffman 2000E receiver.
>>>
>>> Line one functions properly. Line two is the problem. No additional
>>> lines.
>>>
>>> When a signal is sent to line two, the receiver does not seize the
>>> line, hence the acknowledge tone is not generated for the xmitter to
>>> hear. When calling line two via headset I only hear the phone company
>>> generated ring voltage/tone that continues until I hang up. In effect
>>> the receiver does not answer when line two is called. Also when line
>>> one is busy with a signal, and a second call is sent to line one, the
>>> call is routed/hunted to line two, but the receiver still does not
>>> answe line two.r.
>>>
>>> The receiver is aware of the ring voltage coming in on line two,
>>> because the receiver sounds it's buzzer, and then the operator
>>> silences it.
>>>
>>> I have a spare OH, but before I go to the CO I thought I's query here
>>> for advice.
>>>
>>> Thanks.  Charlie


Thanks for the response.  My problem has been resolved.  A visit to
the CO, with spare 200E in hand, turned up thhe following info:

Operators test dial to all receiver phone numbers and hang up when
they hear the acknowledge tone.  When they don't hear the tone they
notify the respective alarm company.

The operators also said that the OH receiver buzzed when they called
the line, requiring them to push the silence button on the OH.

When I arrived at the CO I dialed the line in question, did not hear
the tone, but there was also no buzzing from the OH. Tested several
times; no buzzing.  Conclusion?  Check for presence of dial tone
coming into the CO.

Checked the punchdown block interface and while attaching my headset
to the terminals I heard in the headset what souinded like a kissoff
tone, and the bridgiing clip not quite seated. Found dial tone present
after reseating the clip.  I then called the line from my cell phone
and heard the acknowledge tone.  All has been well since.

Conclusion? Bridge clip not seated properly. Another tech recently had
been on this block with headset, and when removing headset clips, may
had pulled on the bridge clip.