Lucent Technologies DEFINITY Extender Switch Module System Administrators Guide

							Installation
Issue 3   July 1997   3-17
Figure 3-4.  RS-232 Cable Pin Connections
NOTE:
The DEFINITY Extender modules use the CTS lead for flow
control. When the internal buffer is 32 characters from full, the CTS
lead is turned off. While CTS is off, up to an additional 32
characters can be transmitted without any loss of data. If hardware
flow control is not enabled or if a cable without the CTS lead is
used, characters will be lost when this buffer overflows.
The DEFINITY Extender modules use the DCD lead to indicate
whether or not the modules have made a connection. When this
lead is on, the modules have made connection. 
						

							Issue 3   July 1997   4-1
Troubleshooting
4
Troubleshooting and LED Activity
As with all equipment of a sophisticated nature, occasionally an
error in connection or transmission may occur. The DEFINITY
Extender system provides indication of any errors via light-emitting
diodes (LEDs) on the Remote and Switch Modules and by error
messages on the display telephone connected to the Remote
Module. 
						

							Troubleshooting
4-2   Issue 3   July 1997
Troubleshooting
When an error occurs in the operation of the Switch Module, you
should check for malfunctions in an organized manner. Follow
these steps when troubleshooting the Switch Module:
1. Check all interconnecting cables to ensure that they are
properly seated.
2. Verify that the DIP switches are set correctly.
3. Check the circuits to ensure that they are free of noise and
meet the specifications listed in Chapter 1, Introduction.
4. Verify that the power LEDs are illuminated.
5. If you cannot locate the source of the problem, contact Lucent
Technologies by calling 1 800 242-2121 at any time. Please
have ready the serial number found on your Switch Module and
a description of the problem.
If a remote user reports a problem with the Remote Module, verify
that the user has followed the appropriate troubleshooting steps:
1. Verify that the programmed telephone number is correct.
2. Check all interconnecting cables to ensure that they are
properly seated.
3. Verify that the DIP switches are set correctly.
4. Check the circuits to ensure that they are free of noise and
meet the specifications listed in Chapter 1, Introduction.
5. Verify that the power LEDs are illuminated.
If you must contact Lucent Technologies on behalf of the remote
user, be sure to obtain the serial number found on the Remote
Module. 
						

							Troubleshooting
Issue 3   July 1997   4-3
LED Sequences
The LEDs on the Standalone Switch Module and the Rack-Mount
Switch Module help to indicate problems that occur.
Standalone Switch Module
The following flash sequences may be observed on the Standalone
Switch Module:
n1 Green: Online to Remote Module
n2 Green: Dial mode; waiting for ring
n3 Green: Leased line mode; waiting for connect sequence
n4 Green: Dial mode connect sequence
n3 Red: Waiting for PBX connection
n3 Yellow: Test mode
NOTE:
During the power-up sequence, the DEFINITY Extender system
performs a self-test, indicated by a sequence of eight red flashes. 
						

							Troubleshooting
4-4   Issue 3   July 1997
Multi-Mount Rack
The Multi-Mount Rack’s LED blink sequence helps to identify a
malfunctioning interface card. Problem cards are identified by a
red/green blink in the LED blink sequence. Table 4-1 shows the
LED blink sequences for the Rack-Mount Switch Module The
sequences are listed in the order of priority.
Table 4-1. Rack-Mount Module LED Blink Sequence
LED Sequence Meaning
RGRG Module has been flagged by Remote user. A
Remote Module user can flag a Rack-Mount
module when he or she is having audio and/or
other problems on a particular connection. The
remote user does this by pressing the Hold key
four times and then pressing the # key when the
display shows “Disconnect?”. This causes the
DEFINITY ECS and the module connected to
this remote user to display this sequence until
either the module is unplugged or the module’s
diagnostics counts are reset through the
Administration Port.
RRR Module is waiting for connection to DEFINITY
DCP port.
RRGG Module has not detected a ring on analog line
connection since power-up or since the
diagnostic counts have been reset. If this LED
sequence continues for a long time, this
indicates a serious problem, such as incorrect
wiring.
Continued on next page 
						

							Troubleshooting
Issue 3   July 1997   4-5
Table 4-1. Rack-Mount Module LED Blink Sequence
(
Continued)
LED Sequence Meaning
RRG Module has detected at least one ring but is
waiting for a ring on analog line connection.
Since power-up or since diagnostic counts have
been reset, the Rack-Mount Module has not
been successfully connected to the Remote
Module.
RGG Module is waiting for ring on analog line. The
Rack-Mount Module has had at least three
connect sessions with a Remote Module, but
each session has lasted less than an hour.
RGGGG Module is attempting to connect to a Remote
Module but has not been connected to a Remote
Module within the last three connect sessions for
at least one hour.
RG Module is online to a Remote Module but has not
been connected to a Remote Module within the
last three connect sessions for at least one hour.
GG Module is waiting for a ring on the analog line; no
abnormalities have been detected.
GGGG Module is attempting to connect to a Remote
Module; no abnormalities have been detected.
G Module is online to a Remote Module; no
abnormalities have been detected. 
						

							Troubleshooting
4-6   Issue 3   July 1997
Error Messages
If a problem has been encountered during the connection process,
an error message appears on the remote telephone. Table 4-2
shows the error messages and the suggested actions to take.
Table 4-2.  Error Messages
Message Cause Action
No Dial Tone The Remote Module
is not properly
connected to the local
telephone company.Connect a regular
telephone to the
telephone company jack,
and listen for dial tone.
Make sure the line is
properly connected to
the jack on the Remote
Module.  If there still is
no dial tone, have the
local telephone company
check the line.
Line Busy The line that the
Switch Module is
connected to is
already in use.Verify that the correct
telephone number has
been programmed and
that no one else is using
the Switch Module the
remote user is calling.
Continued on next page 
						

							Troubleshooting
Issue 3   July 1997   4-7
Table 4-1.  Error Messages—
Continued
Message Cause Action
No Answer
ToneThe Switch Module is
not responding. The
Remote Module does
not receive a Ring-
Back Tone or an
Answer Back Tone.Verify that the correct
telephone number has
been programmed.
Verify that the Switch
Module is connected to
the line.
Rate Too
SlowThe rate at which the
modem is connecting
is not fast enough to
allow for successful
operation of the
system.Have the local telephone
company lines checked. 
						

							Troubleshooting
4-8   Issue 3   July 1997
Specific Problems
Problems that may develop with the DEFINITY Extender system
usually reflect what type of line is being used, dial line or dedicated
line. In either case you should try the Switch Modules at the
DEFINITY ECS location so you can determine if the problem is with
the Switch Module or with the communications system.
Dial Line Problems
The following problems may occur with Switch Modules connected
to analog dial lines. The possible steps to solve the problem are
listed after each problem’s heading.
No Display on Telephone at
Remote Location
To correct this problem, answer or do the following:
1. Is the correct module at each location?
2. If this is an existing installation, has the installation moved or
has any new wiring been done? Verify the connections.
3. Does the Remote Module have power?
4. Compare the LED on the Remote Module to the LED diagnostic
sheet. The Remote Module may be defective.
5. Is the telephone working properly? 
						

							Troubleshooting
Issue 3   July 1997   4-9 No Connection/No Answer
Tone
To correct this problem, answer or do the following:
1. Does the display on the telephone say “Go Online”? If so, press
2 to start the session. (A new user may never have seen the
Remote Module off-line before.)
2. Check the power connection on the Switch Module.
3. Check the LED on the Switch Module and compare it to the
LED diagnostic sheet. The Switch Module may be defective.
4. Check that the DIP switches on the Switch and Remote
Modules are set for dial line (DIP switch #2 should be OFF).
5. Have there been any electrical storms that may have popped
the line fuses?
6. Go on-line and monitor call progress on the Remote Module
speaker.
7. If there still is no dial tone, do the following:
a. Check the cables on the Remote Module; replace if
necessary.
b. Use a regular telephone to get dial tone on the jack. If
there is no dial tone, check the installation wiring or call
the telephone company. If there is dial tone present, the
cable to the Module or a popped line fuse is probably the
problem.