[vox-tech] OT: DSL Filters

[MB]

Marc,

Have you tried searching the web for two line filters?

http://www.twacomm.com/Catalog/Model_900LCC-2F-50.htm

bottom of:
http://www.2wire.com/office/adap_fil.html

http://www.telephonestuff.com/Catalog/Jmp_Suttle/Dept_ID_302.htm

This would solve your problem?

MB

Marc Elliot Hall wrote:

> I have a bunch of two-line phones; and I have two phone lines.
>
> Originally, my DSL was associated with my primary number. However, my 
> provider decided to stop doing the DSL thing, which prompted me to 
> find another ISP. To ensure seamless service, I activated DSL on the 
> second line and then cancelled DSL on the primary number.
>
> So, now I want to use my two-line phones with, get this, BOTH phone 
> lines. Unfortunately, although they have two pairs of pins at each 
> connector, it appears that my line filters (mPHASE Technologies model 
> DFMU2PL1001) do not pass the second line signal through to the phones. 
> Leaving the filter off allows me to use the second line, but 
> periodically disrupts the DSL service and results in a low 
> signal-to-noise ratio. I have tried different phone sets and different 
> filters to eliminate damaged hardware as the cause of this problem.
>
> Bad ASCII art:
>
> Current config, one voice line working:
>
> service entrance
>  line 1    --> ===0====================+
>  line 2 --> ===0===< DSL MODEM >===+|
>                    |+=====\<line filter>==[phone 1]
>                    +^=====/
>                    ||
>                    |+=====\<line filter>==[phone 2]
>                    +^=====/
>                    ||
>                    |+=====\<line filter>==[phone 3]
>                    +======/
>
> Desired config, two voice lines working:
>
> service entrance
>  line 1    --> ===0====================+
>  line 2 --> ===0===< DSL MODEM >===+|
>                    ||=====\<line filter>/==\[phone 1]
>                    ||=====/            \==/
>                    ||
>                    ||=====\<line filter>/==\[phone 2]
>                    ||=====/            \==/
>                    ||
>                    ||=====\<line filter>/==\[phone 3]
>                    ||=====/            \==/
>
> I could get a filter for the service entrance and bypass it just for 
> the DSL; but that would limit my flexibility to relocate the DSL modem 
> for my home network -- something I plan to do in the future, as it's 
> an eyesore hanging off the wall in my library, at present.
>
> Alternate config 1, two voice lines working:
>
> service entrance
>  line 1    --> ===0====================\<line filter>||
>  line 2 --> ===0====================/          ||
>  Splitter --> ||                  ||=======\[phone 1]
>            0===< DSL MODEM >          ||=======/
>                           ||
>                           ||=======\[phone 2]
>                           ||=======/
>                           ||
>                           ||=======\[phone 3]
>                           ||=======/
>
> I could also get an adapter that splits line 1 and line 2 into 
> separate cable runs, allowing individual filters for each cable and 
> thus bypassing the one-signal-per filter problem. However, I already 
> have enough junk hanging out of my wall jacks as it is; and doing this 
> for all three of my two-line extensions would be a serious PITA.
>
> Alternate config 2, two voice lines working:
>
> service entrance
>  line 1    --> ==0==================||
>  line 2 --> ==0===< DSL MODEM >==||
>                  ||=====<line filter>==\[phone 1]
>                  ||=====<line filter>==/
>                  ||
>                  ||=====<line filter>==\[phone 2]
>                  ||=====<line filter>==/
>                  ||
>                  ||=====<line filter>==\[phone 3]
>                  ||=====<line filter>==/
>
>
> Has anyone else experienced similar issues with multi-line phones? 
> Were you able to resolve the problem without resorting to a filter at 
> the service entrance? Can anyone recommend a line filter that will 
> pass through signals on multiple pairs?
>