Specifications

3-9
Cisco MGX 8260 Command Line Interface Guide
Release 1.2, Part Number 78-10987-01 Rev. B0, January, 2002
Chapter 3 Card Management
Configuration Tasks for Cards
• No back card
All sixteen T1 lines operate in the same mode. The system ignores this setting for cards other than the
NSC.
Figure 3-1 NSC Interface Modes
Back Card Mode
In the back card mode, the NSC transmits and receives traffic through the back card and its T1/E1
interface. The normal signal flow in this case is:
NSC-BC -> NSC-FC -> Bus -> SCC-FC -> SCC-BC
where BC = Back Card and FC = Front Card
Choose the back card mode when you are using the NSC card with a T1/E1 back card.
DMC
back
card
Back plane mode
Dummy
back
card
DMC
front
card
NSC
front
card
SCC
back
card
SCC
front
card
NSC
back
card
Back card mode
SCC
back
card
NSC
front
card
SCC
front
card
3
1933
N
o back card mode
NSC
front
card
SCC
back
card
SCC
front
card