Il 07/12/2011 23.45, Vieri ha scritto:
As far as I know, E1 usually use 16 as D channel. Anyway, I tried as you
suggested and set 1 as the D channel and 2-31 as B channels.
In the asterisk log I got these messages:
chan_dahdi.c: Channel 16 is reserved for D-channel.
chan_dahdi.c: Unable to
Il 07/12/2011 23.45, Vieri ha scritto:
As far as I know, E1 usually use 16 as D channel. Anyway, I tried as you
suggested and set 1 as the D channel and 2-31 as B channels.
In the asterisk log I got these messages:
chan_dahdi.c: Channel 16 is reserved for D-channel.
chan_dahdi.c: Unable to
On 12/07/2011 05:06 PM, Vieri wrote:
--- On Wed, 12/7/11, Kevin P. Flemingkpflem...@digium.com wrote:
Standard Ethernet cables do not always work for T-1/E-1
spans. They do work a rather large percentage of the time,
but not always. Distance between the NIU and the T-1/E-1
card can be a
In article 4ee0b0e2.3050...@digium.com,
Kevin P. Fleming kpflem...@digium.com wrote:
As I said before... an Ethernet cable will work nearly all the time, and
at a 5m length it's probably fine.
Kevin, under what circumstances would an Ethernet cable potentially not
work with T1/E1? And in
I am not Kevin, but I'll tell you that I will not EVER use an Ethernet
cable for T1 again. Kevin and I have discussed this at length, and the
should work plays out poorly in the real world, or at least mine. I've
had it be fine, and had major problems. I can't even find a pattern to it,
like
2011/12/8, Carlos Alvarez car...@televolve.com:
I am not Kevin, but I'll tell you that I will not EVER use an Ethernet
cable for T1 again. Kevin and I have discussed this at length, and the
should work plays out poorly in the real world, or at least mine. I've
had it be fine, and had major
A T1 cable according to this spec:
http://www.cisco.com/en/US/products/hw/routers/ps214/products_tech_note09186a00801f5d89.shtml
Crossing the 1/2 to 4/5 if needed.
On Thu, Dec 8, 2011 at 9:37 AM, Olivier oza_4...@yahoo.fr wrote:
2011/12/8, Carlos Alvarez car...@televolve.com:
I am not
Tony wrote:
Kevin P. Fleming kpflem...@digium.com wrote:
As I said before... an Ethernet cable will work nearly all the time, and
at a 5m length it's probably fine.
Kevin, under what circumstances would an Ethernet cable potentially not
work with T1/E1? And in those circumstances, what
2011/12/8, Carlos Alvarez car...@televolve.com:
A T1 cable according to this spec:
http://www.cisco.com/en/US/products/hw/routers/ps214/products_tech_note09186a00801f5d89.shtml
Crossing the 1/2 to 4/5 if needed.
In fact I was rather referring to the previous example in which a
cable did run
On Thu, Dec 8, 2011 at 9:37 AM, Olivier oza_4...@yahoo.fr wrote:
I usually make my own,
which type of cable are you then using ?
I just realized that I may have not answered the right question. Did you
mean what raw cable did I use to make T1 cables? Cat-3 or above is fine.
I use
On Thu, Dec 8, 2011 at 10:14 AM, Olivier oza_4...@yahoo.fr wrote:
In fact I was rather referring to the previous example in which a
cable did run OK for years and suddenly stopped to.
My THEORY is that the driver chips on either end were wearing out and no
longer able to send or receive as
Il 08/12/2011 18.17, Carlos Alvarez ha scritto:
If you use an ethernet cable, you are using a pair of wires that is
not twisted together, removing the electrical advantage of twisted-pair
cable.
This is wrong, in both T568A or T568B ethernet pins 1/2 and 4/5 runs on
a properly twisted pair.
On Thu, Dec 8, 2011 at 10:48 AM, giovanni.v i...@keybits.org wrote:
This is wrong, in both T568A or T568B ethernet pins 1/2 and 4/5 runs on a
properly twisted pair. Also 120 Ohm impedance is matching the ISDN pri
specification.
If a straight pri cable is needed then a straight ethernet cable
Try this instead:
http://www.ahk.com/t1_cable.html
That cisco link does not specify the cable itself, but only the pin
outs. True T1 cable has a foil shield around each pair, also called
ABAM cable in the telco world.
Ethernet cable is twisted pair without any shielding between pairs.
And
Interesting:
If you cannot obtain T1 specific cable, then use two runs of CAT 5. Use one
CAT5 cable for the Transmit (Tx) signal and one CAT5 cable for the Receive (Rx)
signal. It is necessary for the Tx and Rx signals to be in separate sheaths to
prevent cross talk interference
So pins 1
Hi,
A telco has recently installed a new line in our building and I need to connect
it to my Asterisk server with a Digium PRI card.
It's not the first time I set up and configure a PRI link but I'm failing to
make this one work.
The only information I got from the telco is:
Line Coding
On Wed, 7 Dec 2011, Vieri wrote:
A telco has recently installed a new line in our building and I need to
connect it to my Asterisk server with a Digium PRI card.
It's not the first time I set up and configure a PRI link but I'm
failing to make this one work.
chan_dahdi.c: No D-channels
On 12/07/2011 04:15 PM, Steve Edwards wrote:
On Wed, 7 Dec 2011, Vieri wrote:
A telco has recently installed a new line in our building and I need
to connect it to my Asterisk server with a Digium PRI card.
It's not the first time I set up and configure a PRI link but I'm
failing to make this
--- On Wed, 12/7/11, Steve Edwards asterisk@sedwards.com wrote:
A telco has recently installed a new line in our
building and I need to connect it to my Asterisk server with
a Digium PRI card.
It's not the first time I set up and configure a PRI
link but I'm failing to make this
--- On Wed, 12/7/11, Kevin P. Fleming kpflem...@digium.com wrote:
Vieri: You aren't even far enough along to worry about
D-channel assignments or anything like that. Your span is in
RED alarm; that means it can't see the far end at all. Until
you get that cured (layer 1 - physical layer)
On 12/07/2011 04:51 PM, Vieri wrote:
--- On Wed, 12/7/11, Kevin P. Flemingkpflem...@digium.com wrote:
Vieri: You aren't even far enough along to worry about
D-channel assignments or anything like that. Your span is in
RED alarm; that means it can't see the far end at all. Until
you get that
and maybe more but right now I don't recall any loopback device although I
won't be sure until I go to the site.
Can a loopback device be bought seperately?
Sure, we use the below device all the time:
http://www.amazon.com/Cables-Unlimited-TST-LOOP-003-Smartronix-Superlooper/dp/B000V6Y7IY
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