Cross talk on IP403

[IPONEWBIE1]

I have searched the forums before I posted this and couldnt find anything on a 403 with a cross talk problem so here I go.

I have a 403 with 3.1 and no expansion modules. There are 8 5410 phones plugged in directly to the 403. There are 2 ATM4 trunk cards with 7 out of the 8 lines being used. The 403 is grounded. The demarc is a 66 block (telco) with 2 runs cat 5 feeding the 2 trunk cards (8 pairs).

The customer is complaining of bad cross talk and bad echo problems. It seems to do it with 7 out of the 8 extensions.

Is this a known problem? Is there a fix? I know I will probably get the answer to upgrade to 3.2 but this system worked in a previous office with no problems.

Thanks for your help.

 

[amriddle01]

If the same system worked in a previous office with the same handsets, surely the wiring is at fault as that is all that's changed!

ACS - IP Office Implement

 

[amriddle01]

Plug the handsets directly into the front of the IP Office and test,if no echo or crosstalk you have your answer

ACS - IP Office Implement

 

[IPOfficeIreland]

if the same system worked exactly as is, no new cards, same phones, in a previous site would it not point at the network provider?

To prove this I would run new temporary (ie. don't put too much time into tidyness) Cat5s from the telco mdf to your ip office. There could be a short,crossed pair, something heavy on the cable, sharp bends, parrallel to power cables, along the run causing interference. Once you do this and test you can then point the finger!

 

[amriddle01]

Ignore my last I never noticed the plugged directly in bit!! Try using individual Cat5 cables for each trunk to nagate any crosstalk from withtin the cable even though it shouldn't

ACS - IP Office Implement

 

[IPONEWBIE1]

I did forget to tell you that the old office was a PRI. There is 2 new ATM4 cards. I didnt think cross talk would be an issue on the digital side since it is a digital signal, am I incorrect on this?

All of the wiring is new cat 5 which we tested after the install.

The only problem with plugging directly in to the unit is it is an intermittent problem and they would have to sit in their server closet which is about 4x4.

 

[amriddle01]

Well just plug a couple of test phones in there and when the fault arrises test to see if the test phones are also affected

ACS - IP Office Implement

 

[IPONEWBIE1]

The customer just called and said that it is happening when someone dials extension to extension, it doesnt have to be an external call. I will make a site visit and keep you posted on what I find???

 

[technicaluser4]

Hi there,
I have the same problem, using 406v2 with a DS30 expansion.
2 x 4port analog trunk cards.

I have internalparty 1 calling using a trunk port, during the call he can hear internalparty 3 while conversating interally with internalparty 4.

What can it be?
never had this experience before. Structured cabling is a new installation using cat6.

 

[Bas1234]

Cat6 is the same as Cat5e, how many user have that problem?
The only thing i can think of is that wire 4 or the wire 5 is crossed with the wire 4 or 5 from another station.

greetzzz....Bas

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It works! Now if only I could remember what I did...
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[aarenot]

Power down. Take the IPO cabinet cover off, inspect. Remove ALL of the cards from the system, and inspect them. Ground the system to another source. Put it back together, and try it again. Next replace components one at a time.

 

[tlpeter]

Like said before get two phones and put them straight in th eipoffice and test !!!
If wire b is double on wire a from a different pair you will have crosstalk
I have seenthat so many times and made the misstake myself too !!!

ACA - Implement IP Office
ACA - Voice Services Management
______________
Women and cats can do as they please and men and dogs should relax and get used to the idea!

 

[aarenot]

From my read it seemed the issue was occurring when the phones are plugged straight into the IPO with just a patch cord. My suggest5ion was based on that scenario.

If it does not happen when plugged directly into the IPO, then start writing up a quote to rewire the office for the customer.

 

[tlpeter]

My fault, i did not read well


ACA - Implement IP Office
ACA - Voice Services Management
______________
Women and cats can do as they please and men and dogs should relax and get used to the idea!

 

[photon33]

The customer just called and said that it is happening when someone dials extension to extension, it doesnt have to be an external call. I will make a site visit and keep you posted on what I find???

take the initiative and sell them some new home run cable!





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Wash, rinse, repeat.

 

[aarenot]

When the issue occurs, have the cusotmer unplug the phone then plug it back in to see if it clears the issue. If it does not, then plug in straight at the IPO since the disconnecting doesn't seem to clear it plugging it back in at the IPO istself should also not clear the issue unless it is the cabling.