M8X24-DS drops phone calls ramdonly

[webharvest]

We recently got in a new office and installed the M8X24-DS phone system that was the old system from our headquarters. We have two phone lines supplied by Time Warner so we are definitely not taxing the system.

We have people calling in and we hear the main line do a single half ring and then the call is dropped. Most people calling in say they don't even hear a ring the line is just dead.

This only happens 10-20% of the time. Could it be that the relay contacts are dirty or could it be something with the interaction between the M8X24 and Time Warner? If it is the relays how can I get access to them?

 

[curlycord]

Sounds like not enough voltage from the line carrier.
test at the Demarc (before the system) with a test set.


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curlycord

http://www.curlycord.com

 

[curlycord]

or test with voltage meter....should be around 90volts when ringing.

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curlycord

http://www.curlycord.com

 

[webharvest]

Hmmmm. What should the voltage be? Should I just use a volt meter and monitor it when I call in? Or when you say Test Set do you mean a hand held phone?

I tried to edit my post but it just posted another one (sorry about that) I wanted to add that we use a Norstar Voicemail box NTAB2455 and the system is set to Auto attendant. I just figured I would state that incase it changes the answer.

 

[curlycord]

Yes call in and see the voltage.

You would need to intercept the line and put a jack on the line to use a normal analog set.


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curlycord

http://www.curlycord.com

 

[webharvest]

Intersting. The line measures 50V and when I call in it drops down to 7V. The Modem that Time Warner put in is a Motorola SBV5322. I'm making the measurement at the block where the modem and M8X24-DS are connected together.

Should I talk with Time warner about this voltage level?

 

[curlycord]

What?
Why is their a modem?


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curlycord

http://www.curlycord.com

 

[curlycord]

Did some googling...seesm this modem allows for 4 lines at home on cabel TV?

What kind of telephone lines are they?

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curlycord

http://www.curlycord.com

 

[curlycord]

7 volts is weak!

What ever device it is sounds like the issue is with the carrier.
Maybe they can fix remotely.

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curlycord

http://www.curlycord.com

 

[RikRodgers]

I just had the same issue with an ESI phone system that switched to a voip carrier.

Mike Sandman's got your fix.

 

[webharvest]

Well we have a modem because the phone service is through Time Warner (a Cable company) so the phone lines are provided via the Internet Connection (i.e. VOIP). I will talk to them about the voltage.
What do you mean by Mike Sandman's got your fix?

Thanks for all the help!

 

[endlesswinter]

Mike Sandman's Chicago's Telcom Man.

Google him he's got a ton of telco prducts including the one you need.

 

[DSLT1]

The easiest thing to fix is ringing that's too short for the telephone equipment to recognize. A common fax switch usually puts out the standard 2 seconds on / 4 seconds off ringing, as long as it recognizes the ring. There's a pretty good chance that sticking a fax switch between the line with the short ring cadence and the telephone equipment will fix the problem, but it will likely delay ringing for one or two rings, and will probably eat the Caller ID signal - which normally comes between the first and second ring here in the US. It's an easy thing to try to get you going in the right direction.

there's more about fake dial tone here

http://www.sandman.com/ringvoltbul.html