| Author |
RE Fractional T-1 circuit
|
|
| Morpheous 2004-02-19, 9:24 am |
| t1 vrs frac t is determined by the amount of timeslots (channels) assigned to the data portion of the circuit. full t1 = 24 timesolts
many times telcos will assign a few timeslots to data and the rest to voice (frac t)
CIR is only for Frame relay encapsulation.
if you are using an internal CSU/DSU then you will need to configure timeslots
if it is an external CSU/DSU the breaking off of the timeslots is done there.
what router and wics are you using?
hope that helps.
www.fe4.net
| |
|
| This question was just a a theoretical question that arose from a looking at
a CLEC equipment drawing.
If one DS3 circuit can provide 28 full T1 circuits what happens if all the
T1's are fractional? Can the CLEC sell more T1's without adding another DS3?
In other words, can a single DS3 be provisioned to provide 56 768kb circuits
for resale?
"Morpheous" <m@matrix.com> wrote in message
news:tf3Zb.79799$cz.30360@fe12.usenetserver.com...
> t1 vrs frac t is determined by the amount of timeslots (channels)
assigned to the data portion of the circuit. full t1 = 24 timesolts
> many times telcos will assign a few timeslots to data and the rest to
voice (frac t)
>
> CIR is only for Frame relay encapsulation.
>
> if you are using an internal CSU/DSU then you will need to configure
timeslots
> if it is an external CSU/DSU the breaking off of the timeslots is done
there.
>
> what router and wics are you using?
>
> hope that helps.
>
> www.fe4.net
>
| |
|
|
"NoEcm" <No_ECM@hotmail.com.NoSpam> wrote in message
news:fbdZb.106$RO3.40184@news.uswest.net...
> This question was just a a theoretical question that arose from a looking
at
> a CLEC equipment drawing.
>
> If one DS3 circuit can provide 28 full T1 circuits what happens if all the
> T1's are fractional? Can the CLEC sell more T1's without adding another
DS3?
> In other words, can a single DS3 be provisioned to provide 56 768kb
circuits
> for resale?
>
The answer is No. You can't sell 56 T1-768k circuits because a channelized
DS3 still only has 28 channels. When a T1-768 circuit is ordered, it has to
be
ordered back to 1 of 28 channels on the DS3. As such, you can't sell more
than
28 T1-768 circuits. Only hope that those 768k customers upgrade to T1-1536.
| |
| John Agosta 2004-02-19, 10:25 pm |
|
"Alby" <something@nowhere.com> wrote in message
news:6tqdnbyBeocg_KjdRVn-iQ@giganews.com...
>
> "NoEcm" <No_ECM@hotmail.com.NoSpam> wrote in message
> news:fbdZb.106$RO3.40184@news.uswest.net...
looking[color=blue]
> at
the[color=blue]
> DS3?
> circuits
>
>
>
> The answer is No. You can't sell 56 T1-768k circuits because a
channelized
> DS3 still only has 28 channels. When a T1-768 circuit is ordered, it has
to
> be
> ordered back to 1 of 28 channels on the DS3. As such, you can't sell more
> than
> 28 T1-768 circuits. Only hope that those 768k customers upgrade to
T1-1536.
>
>
The answer is "yes."
| |
| NoEcm 2004-02-19, 10:25 pm |
|
"John Agosta" <j_agosta@remove_wideopenwest.kom> wrote in message
news:-86dnct79ejn7ajdRVn-gw@wideopenwest.com...
>
> "Alby" <something@nowhere.com> wrote in message
> news:6tqdnbyBeocg_KjdRVn-iQ@giganews.com...
> looking
> the
another[color=blue]
> channelized
> to
more[color=blue]
> T1-1536.
>
>
> The answer is "yes."
>
>
>
OK.......................now I'm really confused
| |
|
|
"John Agosta" <j_agosta@remove_wideopenwest.kom> wrote in message
news:-86dnct79ejn7ajdRVn-gw@wideopenwest.com...
>
> The answer is "yes."
>
>
>
Explain your answer? Please explain how a you can get 56 T1-768 circuits
into 28 DS3 channels? You can't tell the telco to place T1 Circuit-A on
DS3-Channel1 / DS0 Channels 1-12 and T1-CircuitB on DS3-Channel1 /
DS0 Channels 13-24.
So please explain John how you get 56 T1 circuits tiered at 768 into 28
channels
on a DS3?
-Alby
| |
| Bernie 2004-02-20, 12:24 am |
| On Thu, 19 Feb 2004 22:09:17 -0500, "Alby" <something@nowhere.com>
wrote:
>
>"John Agosta" <j_agosta@remove_wideopenwest.kom> wrote in message
>news:-86dnct79ejn7ajdRVn-gw@wideopenwest.com...
>
>
>
> Explain your answer? Please explain how a you can get 56 T1-768 circuits
>into 28 DS3 channels? You can't tell the telco to place T1 Circuit-A on
>DS3-Channel1 / DS0 Channels 1-12 and T1-CircuitB on DS3-Channel1 /
>DS0 Channels 13-24.
That's right. YOU can't tell them to do that. But they can do that
on their own with the miracle of ADM's and DCS's and M13's. They
don't leave half their trunks unused just because customers don't want
to pay for full T1's. In fact, why do you think they give price
breaks on fractional T1's if they still have to waste the trunk
capacity with the unused half? The reason is that they save money on
the trunk side by combining the fractional T1's together. So they
don't need to charge you as much in return.
> So please explain John how you get 56 T1 circuits tiered at 768 into 28
>channels
>on a DS3?
You already answered how above (in essence).
--Bernie
| |
|
|
"Alby" <something@nowhere.com> wrote in message
news:RpCdnZCjWcNe56jdRVn-gQ@giganews.com...
>
> "John Agosta" <j_agosta@remove_wideopenwest.kom> wrote in message
> news:-86dnct79ejn7ajdRVn-gw@wideopenwest.com...
>
>
>
> Explain your answer? Please explain how a you can get 56 T1-768 circuits
> into 28 DS3 channels? You can't tell the telco to place T1 Circuit-A on
> DS3-Channel1 / DS0 Channels 1-12 and T1-CircuitB on DS3-Channel1 /
> DS0 Channels 13-24.
>
> So please explain John how you get 56 T1 circuits tiered at 768 into 28
> channels
> on a DS3?
In addition to Bernie's excellent explanation about how to fool with TDM to
get the circuits you want, there are also other techniques for a provider to
pool its core bandwidth and then parcel it out as circuits as needed.
Things like ATM CES and the like.
>
> -Alby
>
>
|
|
|
|