Fiber to 50-pair conversion
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Posted by Robert Redelmeier on April 21, 2005, 5:32 am
Please log in for more thread options Possibly. That fiber pair is almost certainly good for 10 Mbit/s (most likely more), and 50 voice lines need 3.2 kbit/s, but that's uncompressed and 100%usage. > If so. What do I need on each end of the run?
> copper -> > fiber / fiber -> copper device?
> I'll appreciate any input as I'm new at this.
> Regards,
> - Frank
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Posted by James Knott on April 21, 2005, 9:42 am
Please log in for more thread options Robert Redelmeier wrote: > and 50 voice lines need 3.2 kbit/s,
> but that's uncompressed and 100%usage. ???? A standard voice channel is 64 Kb/s Perhaps you meant 3.2 Mb/s? | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Justin Time on April 21, 2005, 8:52 am
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Hey guys, a couple of things here. Voice channels are only 56 or 64K when they are digitized. But for the issue about replacing the 50-pair tie cable. You would need four strands of fiber and four channel banks having the appropriate interfaces. All-in-all it would be cheaper and easier to replace the 50-pair with a new one that is at least Cat3. Rodgers Platt | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by Robert Redelmeier on April 21, 2005, 3:46 pm
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> Robert Redelmeier wrote:
>> and 50 voice lines need 3.2 kbit/s,
>> but that's uncompressed and 100%usage. > A standard voice channel is 64 Kb/s Perhaps you meant 3.2 Mb/s?
Correct. That post "escaped" early. Note there was no --sig. I also intended to add that fiber->copper is normally Ma's
stuff. RTs are full of this sorts of gear. OP should talk
to his PBX vendor to see if they have fiber units (likely). -- Robert >
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Posted by Watson A.Name - \"Watt Sun, th on April 22, 2005, 4:22 am
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> > Robert Redelmeier wrote:
> >> and 50 voice lines need 3.2 kbit/s,
> >> but that's uncompressed and 100%usage. >
> > A standard voice channel is 64 Kb/s Perhaps you meant 3.2 Mb/s?
>
> Correct. That post "escaped" early. Note there was no --sig. > > I also intended to add that fiber->copper is normally Ma's > stuff. RTs are full of this sorts of gear. OP should talk > to his PBX vendor to see if they have fiber units (likely). Used to be. Nowadays it seems everything has gone from circuit switched to packet switched. But I don't know if that means that inexpensive used circuit switched gear is available. It may be more economical to replace the cable. > -- Robert
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> 50-pair burried cable (for voice) and was wondering if I
> can use an existing Fiber run.