ADTRAN FNID DSL System Testing, Control Port Operation, DS1 MON Bantam Jack, Fnid Loopbacks

4. DSL SYSTEM TESTING

The ADTRAN DSL system provides extensive ability to monitor the status and performance of the DS1 signals and DSL loop signals. The front panel LEDs on the FNID are explained in subsection 2 of this practice. Additional testing features are described in this section. Specifically, the Bantam jacks on the front panel of the FNID are described.

5. CONTROL PORT OPERATION

The FNID provides a faceplate-mounted DB9 connector that supplies an RS-232 interface for connection to a controlling terminal. The pinout of the DB9 is illustrated in Figure 4.

DS1 MON Bantam Jack

The FNID provides a dual Bantam jack on the front panel. This jack, labeled ÒMON,Ó provides a non-intrusive access point for monitoring the transmit and receive signals at the DS1 interface point.

6

7

8

9

1

2 TXD (Transmit Data)

3 RXD (Receive Data)

4

5 SGN (Signal Ground)

NOTE: MON Rx provides access to the DS1 input from the customerÕs equipment. MONÊTx provides access to the DS1 output of the FNID toward the customer.

FNID Loopbacks

There are two loopbacks available to the FNID. FNID network loopback loops the FT1 signal back toward the network. FNID CPE loopback loops the FT1 signal back toward the customer. FNID network loop connection locations are illustrated in Figure 3. Appendix A contains diagrams and descriptions of the FT1 system loopback capabilities.

T1 TO CPE

DS1

R1 TO CPE

T FROM CPE

DS1

R FROM CPE

T1 LOOP1

R1 LOOP1

GND

-48V

Figure 3. FNID Network Loop Connection

Locations

Figure 4. RS-232 (DB9) Pin Assignments

The terminal interface operates at data rates from 2.4Êkbps 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 VT-100 or compatible.

NOTE: If you are using a personal computer (PC) with terminal emulation capability, be sure to disable any power saving programs. Otherwise, communication between the PC and the HDSL unit may be disrupted, resulting misplaced characters or screen timeouts.

Operation

A terminal session is initiated by entering multiple space bar characters, which are used by the FNID to determine the speed of the terminal. Once the speed has been determined, an Introductory menu will appear, as illustrated in Figure 5. For abbreviations used in the screen diagrams, refer to Table C.

From the Introductory menu, the Main menu may be selected. The Main menu provides access to detailed performance and configuration information, as illustrated in Figure 6, HDSL Main Menu Screen.

4 Section 61245201L1-5, Issue 3 61245201L1-5C