Channelized T1 from Multiple lines

[richardsav]

Howdy.

We?re changing from multiple leased lines to a Channelized T1, I?ve Google?d around and can?t find any config examples, only for ISDN. Does anyone have some configs or literature I can use?

Sincerely

[paolo bevilacqua]

Use search function on CCO for "channelized T1", there are many many documents. Basically, once you configure "channel-group 1 timeslots" new interfaces will appear and you configure them just like traditional serial.

Hope this helps, please rate post if it does!

[desai.jaideep]

Hi

The communication and multiplexing between all your branches and you will be done by your telco. You just need to configure different "channel-group" for different links.

For Branch A with 128K link

channel-group 0 timeslots 1-2 speed 64

int s0/0:1

ip add x.x.x.x x.x.x.x

For Branch B with 64K link

channel-group 1 timeslots 2 speed 64

int s0/0:1

ip add y.y.y.y y.y.y.y

And so on.

I will update you with a link if i can catch on with one :)

meanwhile following is the link for E1/T1 config:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_configuration_guide_chapter09186a00800d9842.html

Hope that will help.

Regards

JD

[richardsav]

Hi, thank you. I don't full understand this interface, in terms of Leased Line and ISDN. Leased line here is Diginet and ISDN is ISDN. So how is it that they talk about the same controller for ISDN and Diginet (Serial), is this the correct part No for the card I should be using? NM-1CE1T1-PRI and would that handle 64 leased lines at 64K each? or should i use the NM-2CE1T1-PRI?

[mohammedmahmoud]

Hi there,

The NM-1CE1T1-PRI (1-port) and NM-2CE1T1-PRI (2-port) network modules provide support for T1, E1, and ISDN primary rate interface (PRI) network connections in a network module form factor.

When in E1 mode, the module can be configured between channelized E1, ISDN PRI, E1-CAS-R2, balanced and unbalanced, and structured (G.704) versus unstructured (G.703) modes.

You'll have to use the NM-2CE1T1-PRI, which shall give you 2 E1s, but each E1 can only give you 31 channel each of 64K (the lost channel is used for framing), while in T1 mode it shall give you 24 channels each.

Channel-group values range from 0 to 23 for T1 controllers and from 0 to 30 for E1 controllers.

http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/products_feature_guide09186a00801af22a.html

HTH, please rate all helpful replies,

Mohammed Mahmoud.

[richardsav]

Thanks. What info should the Telco give me so that when i configure this int i know what to assign to what site? Do you know if the 2CE1T1-PRI, is supported in the 2800 series?b

[mohammedmahmoud · Accepted solution]

Hi,

It is supported on the 2800 as per this document:

http://www.cisco.com/en/US/products/ps5854/products_relevant_interfaces_and_modules.html

You should arrange with your provider, which channel to connected to which remote branch, and arrange the configuration with them.

HTH, please rate if it does help,

Mohammed Mahmoud.

[richardsav]

Thanks for your time. I will try this out next week and let you know how it goes.

[mohammedmahmoud]

Hi,

Your are welcomed, good luck and please keep us informed with the results.

BR,

Mohammed Mahmoud.