Kitz Forum

Broadband Related => FTTC and FTTP Issues => Topic started by: gazaai on January 12, 2016, 11:39:23 AM

Title: What can cause the SNRM to increase for a short period?
Post by: gazaai on January 12, 2016, 11:39:23 AM

Hi what could be the possible cause of my SNRM increasing for a short time then coming back down?

(https://i.gyazo.com/6d6257d0c3fded97139f290832522057.png)

Do you think it could be just crosstalk or does this look like an other issue?

Thanks

Title: Re: What can cause the SNRM to increase for a short period?
Post by: loonylion on January 12, 2016, 11:41:17 AM

could be a disturber going offline for a while.

Title: Re: What can cause the SNRM to increase for a short period?
Post by: gazaai on January 12, 2016, 11:46:20 AM

Sorry but what do you mean by a disturber?

Title: Re: What can cause the SNRM to increase for a short period?
Post by: Weaver on January 12, 2016, 11:47:51 AM

As Loonylion says, a neighbour switching kit off for a certain period.

Title: Re: What can cause the SNRM to increase for a short period?
Post by: loonylion on January 12, 2016, 11:51:39 AM

a disturber is usually another line that's injecting crosstalk into the D side (PCP to distribution pole) cable bundle.

Title: Re: What can cause the SNRM to increase for a short period?
Post by: gazaai on January 12, 2016, 11:53:19 AM

Oh that's unfortunate as the attainable rate jumps to 73mb. It just shows how much of an impact crosstalk can have on a line.