Buy or Renew
Buy or Renew
Cisco + Splunk: It’s a new day for your data. Learn more.
 
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Start a conversation
558
Views
0
Helpful
1
Replies

Question about SDSL csu/dsu, is it a layer 1 or layer 2 device?

Go to solution
rleung2001
Level 1
Level 1

‎01-18-2008 10:23 PM - edited ‎03-03-2019 08:19 PM

I checked the following link.

http://www.cisco.com/en/US/tech/tk1330/tsd_technology_support_technical_reference_chapter09186a0080759754.html

T1 CSU/DSU and modem are layer 1 device

NIC is a layer 2 device, but SDSL module card requires an external modem.

What layer device ADSL and SDSL module, layer 1 or 2 device?

Labels:
0 Helpful
1 Accepted Solution

Accepted Solutions

Go to solution
JORGE RODRIGUEZ
Level 10
Level 10

‎01-19-2008 01:40 PM

ADSL, SDSL, DSL are layer 1 , you may also find more detailed information at the ITU-T link bellow.

http://www.dslforum.org/aboutdsl/adsl_tutorial.html

http://www.itu.int/ITU-T/

Rgds

Jorge

Jorge Rodriguez

View solution in original post

0 Helpful
1 Reply 1

Go to solution
JORGE RODRIGUEZ
Level 10
Level 10

‎01-19-2008 01:40 PM

ADSL, SDSL, DSL are layer 1 , you may also find more detailed information at the ITU-T link bellow.

http://www.dslforum.org/aboutdsl/adsl_tutorial.html

http://www.itu.int/ITU-T/

Rgds

Jorge

Jorge Rodriguez
0 Helpful
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Customers Also Viewed These Support Documents
Review Cisco Networking products for a $25 gift card