Further to my earlier post regarding Coolports. I have checked with my
friend, and found that the Telephone Handsets aren't digital phones,
but VOIP handsets.

Am I right in thinking that in terms of cabling these are just Ethernet
Twisted Pair devices which usthe same two pairs as 10 Base T or 100
Base T and could therefore be expected to work with the 2 x Data type
Coolports (Or more to the point the cheaper (though less sexy) port
economisers which Videk and others stock)?

I can probably get away with just using these devices on the computer
connections (where I know there will be no problems), but it would be
interesting to know if they could also be used with the VOIP kit.

wrote in message
oups.com...

Further to my earlier post regarding Coolports. I have checked with my
friend, and found that the Telephone Handsets aren't digital phones,
but VOIP handsets.

Am I right in thinking that in terms of cabling these are just Ethernet
Twisted Pair devices which usthe same two pairs as 10 Base T or 100
Base T and could therefore be expected to work with the 2 x Data type
Coolports (Or more to the point the cheaper (though less sexy) port
economisers which Videk and others stock)?

If they are just VOIP phones, then yes - you can even get a small Ethernet
hub/switch and split 1 port to as many as you like.
Like this @ £13.44 for example
http://www.ebuyer.com/customer/produ...duct_uid=35437
They do require power though, so you need a spare socket near by.

They also seem to do a two port passive version (meaning no additional power
is required)
http://www.ebuyer.com/customer/produ...duct_uid=60467
This is only £4
First passive network hub I have seen though, so I would check if it really
is the case!

If you do use a hub or switch, then the maximum data throughput will be 100
megabits, rather then the 200 megabits if you split the cable, so if there
is a PC with heavy network use in the equations, then I would want to split
rather than using a hub. If it was a couple of phones or a printer and a
phone, then a hub should be fine.

Some VOIP phones also have another Ethernet port on the back to plug other
stuff into, so it is worth looking at the back first (but sometimes this can
only be a 10 meg port)

Sparks...

Sparks wrote:

wrote in message
snip

If they are just VOIP phones, then yes - you can even get a small Ethernet
hub/switch and split 1 port to as many as you like.
Like this @ £13.44 for example
http://www.ebuyer.com/customer/produ...duct_uid=35437
They do require power though, so you need a spare socket near by.

They also seem to do a two port passive version (meaning no additional power
is required)
http://www.ebuyer.com/customer/produ...duct_uid=60467
This is only £4
First passive network hub I have seen though, so I would check if it really
is the case!

If you do use a hub or switch, then the maximum data throughput will be 100
megabits, rather then the 200 megabits if you split the cable, so if there
is a PC with heavy network use in the equations, then I would want to split
rather than using a hub. If it was a couple of phones or a printer and a
phone, then a hub should be fine.

Some VOIP phones also have another Ethernet port on the back to plug other
stuff into, so it is worth looking at the back first (but sometimes this can
only be a 10 meg port)

Thanks for that Sparks,

I am trying to avoid using hubs for the reasons you suggest. The
"client" has had problems with slow network connections where they have
used downstream hubs before (though perhaps they were cheap hubs).

Are VOIP "Phones" generally 100Mb/s devices? If so, I presume this
refers to 100Mb/s full duplex? If so (what a lot of if so's) where
does the restriction come in? If you have say Device 1 - Switch -
Switch - Device 2 all on 100Mb/s Full Duplex where is the restriction?
Or were you thinking that if there are 2 devices at 1 end, then by
sharing the first switch, they get less than 200Mb's each? I suspect
you know that the degredation even with 10 devices would (or perhaps I
should say should) be less than that, so I think it must be something
else you have in mind.

Yours enquireingly

Chris

wrote:

Sparks wrote:

wrote in message
snip

If they are just VOIP phones, then yes - you can even get a small Ethernet
hub/switch and split 1 port to as many as you like.
Like this @ ?13.44 for example
http://www.ebuyer.com/customer/produ...duct_uid=35437
They do require power though, so you need a spare socket near by.

snip
Some VOIP phones also have another Ethernet port on the back to plug other
stuff into, so it is worth looking at the back first (but sometimes this can
only be a 10 meg port)

Are VOIP "Phones" generally 100Mb/s devices? If so, I presume this
refers to 100Mb/s full duplex? If so (what a lot of if so's) where

No.
does the restriction come in? If you have say Device 1 - Switch -
Switch - Device 2 all on 100Mb/s Full Duplex where is the restriction?
Or were you thinking that if there are 2 devices at 1 end, then by
sharing the first switch, they get less than 200Mb's each? I suspect
you know that the degredation even with 10 devices would (or perhaps I
should say should) be less than that, so I think it must be something
else you have in mind.

The 10 meg port is only a problem if you connect other devices to it.
You'll 'never' run out of bandwidth if you just connect phones.

VOIP phones will use at most 30K/second or so, so 10 of them on 10mbit
is not a problem.
If you're really concerned, an extra 5 quid or so on a switch, rather
than a hub will utterly eliminate the problem, and let you run thousands
of phones on a 100mbit wire.