ADTRAN Quad T1 IMA Installation And Maintenance Practice page 21

48-port dslam with modem
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Per GR-1089-CORE the Total Access 1248 is designed and
intended for installation as part of a Common Bonding Network
(CBN). The Total Access 1248 is not designed nor intended for
installation as part of an Isolated Bonding Network (IBN).
Per GR-1089-CORE Section 9, the Total Access 1248 is intended to
be deployed in either a DC-C (common) or DC-I (isolated) installa-
tion of the Total Access 1248.
The Total Access 1248 Chassis frame ground terminal must be
connected to a reliable earth ground.
Connect to a reliably grounded –48 VDC source which is electri-
cally isolated from the AC source. The branch circuit overcurrent
protection shall be a fuse or circuit breaker rated minimum
48 VDC, maximum 3 A.
The
POTS
as defined in Appendix B of GR-1089-CORE, Issue 4 and meets the
lightning and power fault criteria with any primary protector that
meets any of the voltage limits of GR-974-CORE or GR-1361-CORE
(i.e., carbon blocks, gas tubes, solid states, etc.). Solid-state
primary protectors are not recommended as they could affect the
signal integrity of the ADSL.
Current limiting protectors are not required.
61179641AL1-5C
CAUTION
CAUTION
CAUTION
CAUTION
and
ports are classified as Type 1, 3, and 5
ADSL+POTS
NOTE
NOTE
Description
1-5

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