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Install and Wire Telephones and Other Equipment
9-16 Issue 1 September 1995
Table 9-8. Circuit Pack and Auxiliary Equipment Classifications
.
Analog
Line (8)
2-Wire
Digital &
Analog
Line (16)
Data
Line
Digital
Line 4-
Wire
Hybrid
Line
MET
Line
Auxiliary
Trunk
Central
Office
Trunk
DID/
DIOD
Trunk
Tie
Trunk
DS1
Tie
Trunk
ISDN
BRI
Line 4-
wire
Central
Office
Trunk
3-Wire
ISDN
BRI
Line 2-
wire
TN467 TN2149 TN72
6
TN413 TN762 TN735 TN417 TN429 TN429 TN478 TN483 TN556 TN2198
TN432 TN2135 TN754B TN762B TN763 TN493 TN2139 TN458 TN722
TN431 TN468 TN564B TN763D TN422 TN459 TN449 TN767B
TN411B TN448 TN421 TN436 TN434 TN722B
TN742 TN746 TN438 TN414 TN415 TN464D
TN769 TN746B TN447 TN2146 TN760
TN465 TN753 TN760D
TN747B
TN2138
TN2147
TN2148
1. DID means Direct Inward Dialing
2. DIDO means Direct Inward Outward Dialing
3. DS1 means Digital Services Level 1
4. ISDN means Integrated Services Digital
Network
5. BRI means Basic Rate Interface
6. MET means Multibutton Electronic Telephone