TELECOM Digest OnLine - Sorted: Re: Ground Start Analog Phone

Re: Ground Start Analog Phone

William Warren (
Thu, 09 Feb 2006 18:44:53 -0500

Administrator wrote:

> Hi Pat,

> With your vast experience, I was wondering if you can help me. I just
> installed a Cisco CallManager Express system. Everything is working
> great with the system. The problem is we set the lines to groundstart.
> Now we would like to have the main line also going to an analog phone
> just in case we have a power failure or the CME goes down. Is there an
> analog phone we can purchase that has groundstart capabilities? If
> so, please point me in the right direction.

> [TELECOM Digest Editor's Note: [snip]
> Please recall all you need to do to have a 'ground start' phone is
> to touch the 'tip' side of the line to ground momentarily, like for
> one or two seconds, then remove that connection. [snip]


If all he wants is to be able to _answer_ the phone, any instrument will

William Warren

(Filter noise from my address for direct replies)

[TELECOM Digest Editor's Note: I once wanted to see what would happen
if a call came into a payphone (in those days they were all ground
start with the coin touching the lever and tripping it to make the
connection to ground). So I took one payphone off hook and held it
to my ear while depositing the ten cent coin in a second nearby phone
and dialing the first number. I heard (on the second phone) the
audible ring aand as the second (audible) ring was occurring, the
first phone gave a little 'click' as the table inside tilted to
collect any coins it has been holding (none) and with another click
the two phones were connected. Ditto with any ground start phone. I
put a speaker phone on a ground start line once and left it there in
the 'answered' position; a call came in to the phone, the way I could
tell there had been a call was all of a sudden I heard breathing on
the line as someone was sitting there waiting for an answer. PAT]

Post Followup Article Use your browser's quoting feature to quote article into reply
Go to Next message: John McHarry: "Re: Fiber Cut Knock Rural S.E. Kansas Off Line"
Go to Previous message: DLR: "Re: Western Union Public Telegram Offices"
May be in reply to: Administrator: "Ground Start Analog Phone"
TELECOM Digest: Home Page