Specifications

4-18 Cisco MGX 8220 Reference, Release 4.1
Circuit Emulation Service Module (8 port)
CESM 4-Port LED Indicators
The CESM 4-Port LED indicators are described in Table4-3. All LED indicators are located on the
faceplate of the front card.
Table4-3 CESM LED 4-Port Indicators
Circuit Emulation Service Module (8 port)
The 8 port Circuit Emulation Service Module (CESM) is a two-card set consisting of an CESM
function module front card and either a 8 T1 or a 8 E1 line module back card. T1 lines use RJ48
connectors, E1 line module cards use either RJ48 or SMB connector types. The possible line
modules are:
• AX-RJ48-8T1-LM
• AX-R-RJ48-8T1-LM
• AX-RJ48-8E1-LM
• AX-R-RJ48-8E1-LM
• AX-SMB-8E1-LM
• AX-R-SMB-8E1-LM
Up to 10 CESMs may be installed in a shelf in slots 5 through 14. For T1 line versions,
1:N redundancy is supported either through redundant line modules or through the SRM-T1E1
board. Likewise, for T1/E1 versions, BERT and loopbacks are supported using the SRM.
1:N redundancy for E1 version is provided through redundant line modules only.
The main function of the CESM cards is to provide a constant bit rate (CBR) service for T1/E1 ports
over ATM network.
Type of LED Color Meaning
PORT LED Green Green indicates the port is active.
Red Red indicates local alarm on the port.
Off indicates the port has not been activated (upped).
ACTIVE LED Green On indicates the card set is in active mode.
STANDBY LED Yellow Slow blink without the Active LED indicates the card is in the boot state.
Fast blink with the Standby LED indicates the card is being downloaded.
Fast blink indicates the service module is passing BRAM channel
information to the ASC.
Steady yellow indicates the card is in Standby mode and the firmware is
executing ADMIN code.
FAIL LED Red Steady Red with Active and Standby LEDs off indicates either the card
is in the Reset condition, the card has failed, or the card set is not
complete (no line module).
Steady Red with Active LED on indicates the card was active prior to
failing.
Steady Red with Standby LED on indicates the card was standby prior to
failing.
Both standby and red LED alight indicates self test failure.