Synchronization - Avaya G700 Maintenance Manual

9 G700 and Media Module LEDs:
Table 107. Software-Controlled E1/T1 LEDs
Color
RED
GREEN
YELLOW
The E1/T1 Media Module has a fourth GREEN SIG LED that indicates whether the link to the
Central Office (CO) is up (equivalent to the TN464F circuit pack Status 3 GREEN LED). See
18.
Note: Power-up and alarm states are the only conditions where hardware sets the state
of the LEDs independent of ANGEL firmware control.
Figure 18. E1/T1 Media Module LEDs
The supported portion of the LED Control message allows software to change the status of the three
standard LEDs on the E1/T1 Media Module faceplate. The exceptions to letting software turn off the
LEDs are:
• The board is in reset (Red LED remains on)
• A call is up (Yellow LED remains on while the E1 line is in-frame and at least one voice/data call
is up)
• During board reset initialization testing (Green LED remains on until initialization testing is
complete).
Note: For ISDN operation, the Yellow LED will be turned on if ANY port has an active
TDM connection (including the D-channel).

Synchronization

Clock synchronization is set via the Media Gateway Processor (MGP) command line interface (CLI).
The command (in 'configure' mode) set sync interface {primary | secondary} {<mmID> |
Maintenance for S8300/S8700 and G700
555-234-101 — Issue 2 — October 2002
Location Description
Top Upon power-up, this LED is turned on. Upon passing
diagnostics this LED is turned off. During normal circuit pack
operation this LED is not turned on except for certain alarm
states.
Middle During power-up self-testing and maintenance testing
requested by the SPE, this LED is turned on.
Bottom This LED indicates that the clock is synchronized with a source
(usually the Central Office). The LED is blinking 2700 ms ON
and 300 ms OFF. This is the most common condition.
The opposite blinking of the YELLOW LED is 300 ms ON and
2700 ms OFF. This is an error condition, and indicates that the
MM710 E1/T1 Media Module is not synchronized with a clock.
An infrequent occurrence is a steady YELLOW LED. This
indicates in-use activity, only when clock synchronization is set
to local.
Media Module LEDs
Figure
291