ADTRAN 6540 Express Setup Guide - (G.703 to Nx64 2MBps)

With previous Setup of Adtran Point-to-Point modem, we have configured a 2 Nx64K modem. Now, we will show you how to configure a  back-to-back modem G703 and Nx64K 2Mbps.




Modem 1

1.  Main menu – Provisioning(2) – Unit Options(1) – SHDSL Options(2) – Interface Mode(1)
         a. Select either 2W or 4W, depends on your setup.
2.  Main menu – Provisioning(2) – Unit Options(1) – SHDSL Options(2) – Payload Rate(2)
        a. Since we are configuration a Full E1 or 2Mbps, we can
            select N=32 timeslot.
3.  Main menu – Provisioning(2) – Unit Options(1) – Unit Mode(1)
        a. Select,  LT (2)
4.  Main menu – Provisioning(2) – Unit Options(1) – Cross-Connect Map(2)
        a. Press “G” for Full G.703 Service
        b. You have notice the all timeslot for SHDSL and G703 change
             from “0” to “1” except for Timeslot “0” which turn from “0”
             to “32”, replace this to “1” (use Tab) to modify the configuration
             from Frame  to Unframe Mode.
        c. Then Press “A” to save the configuration, and “Esc” once to move
            menu backward.
5.  Main menu – Provisioning(2) – Unit Options(1) – Clock Source(3)
        a. In this section, we can select “G.703 Rx Clock” or Internal Clock,
            ideally  I always select “G.703 Rx Clock”. But, if you will use
            this in Point-to-point where ClockSource has problem or out of
            service, we can use “internal clock” of the modem.

Modem 2

1.  Main menu – Provisioning(2) – Unit Options(1) – Unit Mode(1)
        a. Select,  NT(1)
        b. Put the SHDSL cable on both modem interface (straight splice)
        c. Notice that the modem SHDSL will synchronized
2.  Main menu – Provisioning(2) – Unit Options(1) – SHDSL Options(2) – Interface Mode(1)
        a. No setup will be done here.
3.  Main menu – Provisioning(2) – Unit Options(1) – SHDSL Options(2) – Payload Rate(2)
        a. No setup will be done here.
4.  Main menu – Provisioning(2) – Unit Options(1) – Cross-Connect Map(2)
        a. Press “N” for Full Nx64K Service
        b. All SDHL timeslot will assign to 33.
        c. Then Press “A” to save the configuration, and “Esc” once to move
            menu backward.
5.  Main menu – Provisioning(2) – Unit Options(1) – Clock Source(3)
        a. In this section, we can choose “SHDSL Rx Clock”.


Now, your setup is ready for testing. Put a V.35 Winchester type loopback connector on your NT interface and G.703 Bit Error Tester on your LT.

V.35 Loopback Assignment

P	-	R
S	-	T
U	-	V
W	-	X
C	-	F
E	-	H

ADTRAN 6540 Express Setup Guide

We will be using a Hyperterminal to setup the modem.

Modem Setup;

Com Ports :  N

Port Setting, you may click default button to simplify setup;

9600 bits per second

8 for Data Bits

None for Parity

1 for Stop Bits

None for Flow Control

Using the modem as 2W in Point-to-Point Setup.

Power-Up the modem

Connect the cable (RJ45) using pin 1 & 2 as Tip and Ring of a line between Modem A and Modem B

LTU Side

First, we have to identify which is the LTU and the NTU modem

In an above sample, we will be using the Modem A as an LTU, 

Goto MainMenu then select the Unit Information, if the modem is in default setup which is in NTU Mode.

Goto MainMenu> Provisioning> Unit Option

Unit mode

Under Unit mode select, LTU

Set the modem to use a 2W line

Goto MainMenu> Provisioning

Interface Mode

Select the 2W

Set the modem Payload Rate, we will be using a 512kbps as a sample rate

Goto MainMenu> Provisionong

Payload Rate

In Payload Rate Page, we used the Nx64 formula or 512 / 64 = N, N=8

After setting the Payload Rate, we will goto Cross-Connection Map to activate the payload

Goto MainMenu> Provisioning> Unit Option> Cross-Connect Map

Under Cross-Connect map, you have notice that there are 8 active payload, 

Activate every payload by entering 33 or simply type N to activate all.

Then save.

NTU Side

Set the modem as NTU, do the procedure like we set the LTU

Wait for 1 minute while the two modem synchronize

When Modem HDSL Sync, Modem A (LTU) will update the Modem B (NTU)

Goto Cross-Connect Map to activate the Payload.

Then Save.

You may leave comment to request for your own sample setup

>> More sample Setup to come <<

• G.703 (2mbps) to G.703  (2mbps) 
• G.703  to Nx64 (2mbps)
• G.703  to Nx64 (512kbps) 

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