Carrier Access Access Navigator User Manual

1. Show current EOC settings with the following command:

The show command will produce a message showing the embedded operation channel (EOC) 
settings similar to the following:

Settings for EOC:

Primary EOC:

DS1 25, Channel 12

Secondary EOC:

DS1 29, Channel 12

For proper operation, the EOC must be on Channel 12 and the TMC on Channel 

24 of the DS1. The first switch DS1 (TermID = 1) in the GR-303 interface group must 
contain the primary EOC and TMC. The second DS1 (TermID = 2) must contain the 
secondary EOC and TMC. By default, DS1 #25 is TermID 1 and DS1 #29 is TermID 2. The 
show ds1 all

 command lists the DS1 TermIDs.

2. If switch EOC settings are correct, skip remaining steps.

It is recommended that primary and secondary EOC and TMC be assigned to 

different Quad T1 Framer (QF) cards for added protection. In the event one QF card fails, 
the GR-303 switch will then be able to continue service using the redundant EOC and TMC 
on a different QF card. QF card #1 contains DS1 #1 to #4 contains DS1 #5 to #8, etc. By 
default, the primary EOC and TMC are on DS1 #25 and the secondary EOC and TMC are 
on DS1 #29.

3. Set EOC primary location with the following command:

set eoc primary <n:ch|none>

Example:

set eoc primary 25:12

Example:

set eoc primary none

4. Set EOC secondary location with the following command:

set eoc secondary <n:ch|none>

Example:

set eoc secondary 29:12

Example:

set eoc secondary none