ADTRAN 3060 specifications Revision History, Installation

The HDSL local loop operates as two independent subsystems each operating over a single twisted pair. The LTU communicates over these two twisted pairs to the HDSL Transceiver Unit - Remote end (NTU). Each subsystem carries half of the total bandwidth along with a small amount of overhead used for maintenance and performance monitoring.

System power and alarm bus connections are made through the backplane of the Total Access 3010 shelf. E1 and HDSL signals are connected through the 50- pin shelf connectors related to each individual slot.

The LTU contains onboard fuses. If a fuse opens, it supplies a -48 Vdc voltage to the fuse alarm bus and all front panel indicators will be Off. These fuses are not field replaceable.

The Total Access 3010 LTU uses a DC-to-DC converter to derive its internal logic and span powering voltages from the -48 Vdc office supply. The Total Access 3010 LTU can span power REGs and NTUs as listed above. When used with REGs and NTUs, the LTU can span power one REG and an

NTU at less than -120 Vdc. Span powering voltages meet all requirements of IEC 950.

REVISION HISTORY

This is the first issue of this practice. Future changes to this document will be summarized in this paragraph.

2. INSTALLATION

C A U T I O N !

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

After unpacking the unit, inspect it for damage. If damage is discovered, file a claim with the carrier, then contact ADTRAN. See Warranty and Customer Service.

The Total Access 3010 LTU occupies one line card slot in a Total Access 3010 shelf. Power and alarm signals are provided to the card through the backplane of the shelf. E1 and HDSL loop signals are connected to the mass termination shelf connectors corresponding to the slot the unit occupies. See Figure 2 for LTU edge connector wiring.

P2, Row A		P2, Row B		P2, Row C
1		1	Chassis ground	1	- 48 Volt DC A
2	- 48 Volt return	2	Chassis ground	2	- 48 Volt DC A
3		3		3
4		4		4	HDSL Loop 1 Ring (facility)
5		5		5	HDSL Loop 1 Tip (facility)
6		6	HDSL Loop 2 Ring (facility)	6	HDSL Loop 2 Tip (facility)
7		7		7
8		8		8
9		9		9
10		10	Fuse alarm	10
11		11		11
12		12		12
13		13		13
14		14		14
15		15		15
16		16		16
17		17		17
18		18		18
19		19		19
20		20		20
21		21		21
22		22		22
23		23		23
24		24		24
25		25	Receive G.703 Ring backup connection	25	Receive G.703 Tip backup connection
26		26	Transmit G.703 Ring backup connection	26	Transmit G.703 Tip backup connection
27		27		27
28		28		28
29		29	Receive G.703 Ring normal connection	29	Receive G.703 Tip normal connection
30		30	Transmit G.703 Ring normal connection	30	Transmit G.703 Tip normal connection
31		31		31	- 48 Volt DC B
32		32	- 48 Volt return	32	- 48 Volt DC B

Figure 2. LTU Edge Connector Wiring

2 Section 61182007L1-5, Issue 1 61182007L1-5A