DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-664DS1 CONV-BD
9
Administration steps for a Standard Reliability and High Reliability System (no
PNC Duplication) are as follows:
1. Administer carriers via the add/change cabinet command
2. Administer circuit packs via the change circuit-pack command
3. Administer connectiv ity and the facility options of the DS1 CONV Complex
via the add/change fiber-link command
Administration steps for a Critic al Reliability System (PNC duplication) are as
follows:
1. Enable PNC duplication feature using change system-parameter
customer-option command
2. Administer carriers via the add/change cabinet command
3. Administer circuit packs via the change circuit-pack command
4. Administer connec tivity and the DS1 facility options of eac h DS1 CONV
Complex via the add/change fiber-link command
5. Turn on PNC duplication via the change system-parameter duplication
command
TN1654 Board Configuration Switch Settings
The TN1654 DS1 CONV circuit pack is field configurable for T1 or E1 operation
so that a single board serves wor ldwide applic ation. All four DS1 facilities are
configured to either T1 or E1 as a group via an option switch located on the
component side of the c ircuit pack. If T1 operation is selected, four addi tional
switches are used to select th e framing mode for each fac ility. Each facility can
be set to either D4 or ESF framing. If E1 operation is selected, the same four
switches are used to select the E1 facility line termination impedanc e. The E1 line
termination impedance for each facility can be set to eithe r 120Ω for twisted-pair
or 75Ω for coaxial wiring.
T1 or E1 operation must also be administered for the TN1654 DS1 CONV board
on the fiber-link form via the Bit Rate field. An error will b e logged and an alarm
will be raised if there is a T1/E1 inconsistency between the administered b it rate
and the board opt ion switch setting.
The T1 facility framing mode and the E1 facilit y line termination impedanc e are
defined by the op tion switch settings only. Administration of the se values is not
allowed. The fiber-link form will disp lay the selected optio n switch settings for
each facility.
DS1 CONV LEDs
The TN574 board has seven LEDs on its faceplate. The TN1654 board has
eleven LEDs on its faceplate. The top three system stand ard LEDs are used to
provide an indic ation of the state of the DS1 CONV board. These LEDs are under