Avaya S8700 Maintenance Manual page 526

Maintenance Object Repair Procedure
RLB = Repeater Loopback
CLJ = Loop-Back Jack Loopback
R-LLB = Remote Line Loopback
SMRT = Smart Jack
LPBK = Loopback
Circuit Pack Administration and Options
The DS1 configuration for each circuit pack is administered on the DS1 Circuit
Pack form. Bit Rate is set to 1.544 Mbps for 24-channel systems, and 2.048
Mbps for 32-channel systems. Country Protocol is used to drive layer-3
protocol decisions based on PRI specifications specific to a given country (not
those related to specific features). This Country Protocol is independent of the
Country parameter administered on the country-options system-parameters
form. Different UDS1 circuit packs may be administered with different Country
Protocols, allowing the switch to act as a gateway between two incompatible
ISDN-PRI implementations (for example, between two different countries). US
systems use country protocol 1. Near-End CSU Type is set to other for no
CSU installed or for an external CSU such as an ESF T1 CSU, or set to
integrated for the 120A1 CSU module. Answering integrated will cause
additional fields to be displayed for administering the Enhanced Integrated CSU
module. Echo Cancellation? is set to y if the echo cancellation right-to-use
feature has been activated and this TN464GP/TN2464BP or later suffix board is
to supply echo cancellation. In addition to the above there are numerous other
fields defining such parameters as framing modes, line coding, companding mode
and so on.
Two option jumpers located on the side of the TN464C/D circuit pack must be
installed correctly. The figures on the following page show how to configure the
circuit pack for 24- or 32-channel DS1, and for 75*W (coaxial) or 120*W trunk
connections. The channel selection must match the parameters administered on
the corresponding DS1 Circuit Pack Form. (US applications use 24 Channels.)
8-1222 Issue 1 May 2002 555-233-142