ADTRAN 3060 specifications Display Off Mode, SCU Control Port Operation Hdsl, Front Panel

LTU Network-Side Loopback
			AIS
G.703	LOCAL		G.703
	LOOP
			X
	LTU	NTU
NTU Network-Side Loopback
			AIS
G.703	LOCAL		G.703
	LOOP
			X
	LTU	NTU
NTU Customer-Side Loopback
X	LOCAL
AIS			G.703
	LOOP
	LTU	NTU
LTU Customer-Side Loopback
X	LOCAL
AIS			G.703
	LOOP
	LTU	NTU
LTU and NTU Bilateral Loopback
G.703	LOCAL		G.703
	LOOP
	LTU	NTU
REG Network-Side Loopback
			AIS
G.703			G.703
LTU	REG		X
			NTU
Dual REG Network-Side Loopback
			X	AIS
G.703
			X	G.703
LTU	REG	REG	NTU
	X = Signal Inactive

Figure 4. HDSL Loopbacks

REG Loopback

The REG HDSL transceivers are looped back toward the LTU. This loopback enables a complete checkout of the LTU data path, the HDSL link between the LTU and the REG, and the REG data path. The REG loopback is activated via the V.24 craft interface.

LOS2 No synchronization of LTU and NTU on loop 2

HER1 HDSL loop1 error HER2 HDSL loop2 error 1=XX* Loop 1 in Sync 2=XX* Loop 2 in Sync

*XX is the Signal Quality Level of the loop and ranges from 0-20, where 0 is an indicator of poor signal quality and 20 represents good signal quality.

Display Off Mode

The display enters Display Off Mode from Status Mode after 5 minutes with no activity on the display switch. While in this mode, the display is completely off.

The display will return to Status Mode under the following conditions:

•When either MODE or SELECT is activated. Display starts again when the switch is released

•When a message other than loop margin is to be displayed

5.SCU CONTROL PORT OPERATION (HDSL)

The Total Access 3010 SCU provides a faceplate- mounted DB-9 connector that supplies an RS-232 interface for connection to a controlling terminal. The pinout of the DB-9 is illustrated in Figure 5. The terminal interface operates at data rates from 1.2 kbps to 19.2 kbps. The asynchronous data format is fixed at 8 data bits, no parity, and 1 stop bit. The supported terminal type is VT100 or compatible.

1
6	TXD (Transmit Data)
2
7	RXD (Receive Data)
3

Front Panel

Display Message/Condition: LLOS LTU E1 Loss of Sync

8

9

4

5 SGN (Signal Ground)

NLOS NTU E1 Loss of Sync LERR LTU E1 error NERR NTU E1 error

LBPV LTU E1 Bipolar violation (BPV) NBPV LTU E1 Bipolar violation (BPV)

LOS1 No synchronization of LTU and NTU on loop 1

Figure 5. RS-232 (DB-9) Pin Assignments

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