Installation, Operation & Diagnostics MIU/PowerPort Series

Installation, Operation & Diagnostics

for the

MIU/PowerPort Series

/ 2.4 / 9.6 / 14.4 / 28.8

Industrial Grade Dial Modems

Book 1 of 2

(See Book 2 for AT Commands)

Document No. 49-0002-002

Telenetics Corporation

26772 Vista Terrace Drive

Lake Forest, California 92630

Telephone (949)455-4000

Fax (949)455-4010

Document No. 49-0002-002

TABLE of CONTENTS

1. STANDARDS ....................................................................................Page 2

2. PRODUCT OVERVIEW ...................................................................Page 3

3. GENERAL PRODUCT SPECIFICATIONS .....................................Page 5

4. POWER MODES ...............................................................................Page 6

5. MODEM SPECIFICATIONS ............................................................Page 7

6. POWER CONNECTIONS .................................................................Page 8

7. SERIAL DATA PORT PIN-OUTS....................................................Page 9

8. DIP SWITCHES............................................................................... Page 10

9. LED INDICATOR ........................................................................... Page 11

10. AUTO RESET FEATURE ............................................................... Page 11

11. AUTO DIAL FEATURE.................................................................. Page 11

12. OUTLINE DRAWING & MOUNTING.......................................... Page 12

13. MODEM CONFIGURATION ......................................................... Page 13

14. FACTORY CONFIGURATION...............................................Page 14 - 17

15. DIAGNOSTICS.........................................................................Page 18 – 28

MIU Installation, Operation & Diagnostics Edition: January 25, 1999 Page 1

1. STANDARDS

All Telenetics dial-up modems are designed to meet the following Standards:

FCC Part 15, Class A and Part 68 USA:

Canada: DOC Standards CS-01, CS-02 and CS-03

CANADIAN DEPARTMENT OF COMMUNICATION NOTICE

NOTICE: The Canadian Department of Communications (DOC) label identifies certified equipment.

This certification means that the equipment meets certain telecommunications network protective, operational and safety requirements. The department does not guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, make sure you are permitted to connect it to the facilities of the local telecommunications company. You must install the equipment using an acceptable method of connection. In some cases you may also extend the company’s inside wiring for single line individual service by means of certified connector assembly (telephone extension cord). You should be aware, however, that compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility designed by the supplier. Any repairs or alterations made by a user to this equipment, or equipment malfunctions, may give the telephone communications company cause to request the user to disconnect the equipment.

For your own protection, make sure that the electrical ground connections of the power utility, telephone lines and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

Caution: Do not attempt to make electrical ground connections yourself, contact the appropriate electric inspection authority or an electrician.

NOTICE: The load number (LN) assigned to each terminal device denotes the percentage of the total load to the telephone loop used by the device, to prevent overloading. The termination on a loop may consist of any combination of devices, subject to the requirement that the total of the load numbers of all the devices does not exceed 100.


2. PRODUCT OVERVIEW

The MIUPowerPortX.X Series are industrial grade dial and leased line modems for connection to the Public Switched Telephone Network.. They can be powered from a wide range of AC and DC power supplies, they are internally surge protected on both the power and analog lines, and they will operate in temperatures from -40 to +85 deg C.

Internally, each unit consists of a baseboard and a communication

module. The baseboard includes the power supply regulation and surge

protection. The communication module is a Telenetics™ Pony

Express™ Dial Modem Module.

The MIU PowerPort is packaged specifically for the harsh environments found in utility substations, industrial facilities and remote sites. Though functionally similar to commercial modems, the MIU PowerPort includes special features that make it particularly well suited for utility and industrial applications:

Environment:

The MIU PowerPort has been designed specifically for use in harsh environments. In addition to an extended temperature range (-40 to +85º C), the MIU includes surge, shock, vibration, and safety features superior to those of conventional commercial modems.

Power Supply:

The MIU PowerPort can be powered from a range of

AC and DC power sources: +5 VDC, 12 VDC Battery,

7 to 16 VAC or 8 to 16 VDC. An optional 120 VAC wall transformer is available from Telenetics.

Low Power:

The MIU PowerPort dial modems can be configured to enter into a “power down” mode. In this mode, an

MIU PowerPort will consume only a small fraction of its active power while waiting for either controller or telephone line activity.


Industrial:

The MIU PowerPort is packaged in a rugged, compact, non-metallic (ABS) enclosure. Designed for unmanned locations, the MIUs do not include the array of pushbuttons and LEDs normally associated with consumer-type modems to increase reliability and decrease power consumption. Configuration is by dip switches and/or software (“AT”) commands.

Standard industrial connectors for data, analog and power interfaces allow reliable interconnection to other industrial components.


3. GENERAL PRODUCT SPECIFICATIONS

Dimensions: 5.3 x 4.0 x 1.375 inches

Voltage Supply: : 8 to 24 VDC

7

Optional Wall Transformer 115 VAC, 50/60 Hz

Current Requirements: (See Section 4 for Power Down Modes)

MIU PowerPort 2.4:

12VDC

65mA

24VDC 125VDC

27mA 7.5mA

120VAC 220VAC

6.5mA 5.5mA


12VDC

115mA

24VDC 125VDC

57mA 11mA

120VAC 220VAC

10mA 9mA

MIU1 PowerPort 4.4:

12VDC 24VDC 125VDC

160mA 69mA 14mA

120VAC 220VAC

12mA 9mA


12VDC 24VDC 125VDC

205mA 125mA 16mA

120VAC 220VAC

15mA 11mA

Surge Protection: Power Supply: 8kVrms

Analog Line:

3.75kVac

Digital

Operating Temperature:

5kVac (MIU2.4 & 9.6)

-40 to +85 deg C

Operating Humidity:

Storage Temperature:

0 to 90% (non-condensing.)

-55 to 100 deg C

* Note: At temperatures below 0

° F, an additional current drain of up to 350 ma occurs as the internal proportional heater operates.


4. POWER MODES

Mode Description

Power On

Sleep

Factory Setting: Full power is always

available to the modem.

If the modem is on hook for a predetermined period (PE2400 = 5 seconds; PE2496, PE14.4 & PE28.8 = software configured: Set S24 to desired delay in seconds), it will drop to a low current mode).

The modem will instantly “wake up” to full power by either an incoming ring signal or any transmit data (TxD) signal.

Power Down If the modem is on hook for 30 seconds,

it will automatically turn “off”.

The modem will automatically turn “on” to full power within 400ms of receiving a

DTR signal or an incoming call.

Power

Consumption

See Section 3

Approx. 6mA

Approx. 20

µA

The power mode is set by a dip switch on the Pony Express Modem Module inside the MIU case. Factory default is Power On mode. Other modes are set at the factory before shipment if requested. Other modes can be set in the field ~ call

Telenetics for an instruction sheet.


5. MODEM SPECIFICATIONS

MIU2.4

Standards V.22bis

V.22

Bell212A

Bell 103

Modem Line

Speed

(Asynch)

DTE Rates above Modem

Line Speeds

Error

Correction &

Data

Compression

2400bps

1200bps

300bps

-

MIU9.6

V.22bis

V.22

Bell212A

Bell 103

2400bps

1200bps

300bps

19200bps

9600bps

4800bps

MIU14.4

V.32bis

V.32

V.22bis

V.22

Bell212A

Bell 103

14400bps

9600bps

4800bps

2400bps

1200bps

300bps

57600bps

38400bps

19200bps

2,3,5

& 10

MNP 2,3,5

& 10

V.42

V.42bis

V.42

V.42bis

MIU28.8

V.34

V.32bis

V.32

V.22bis

V.22

Bell212A

Bell 103

28800bps

19200bps

14400bps

9600bps

4800bps

2400bps

1200bps

300bps

115200bps

57600bps

38400bps

19200bps

MNP 2,3,5

& 10

V.42

V.42bis


6. POWER CONNECTIONS

DC Power Jack, 2.0mm – This standard concentric jack is provided to attach an

external power source in the range of 7 – 16 VAC or 8 – 24 VDC. The 2.0mm

Jack connects through a full wave bridge so either polarity is acceptable from the

DC source. The slide switch adjacent to the LED must be to the right side

(Toward the 2.0mm Jack).

DB – 25, Pin 10 – A DC voltage may be applied at the 25 pin data connector. DC

only with the positive lead connected to pin 10, and the negative lead connected to

Signal Ground on pin 7. This should be a regulated 5 VDC source. The slide switch adjacent to the LED must be to the left side (Away from the 2.0mm Jack).

Internal jumper JP1 must be on pins 1-2.


7. SERIAL DATA PORT PIN-OUTS


8. DIP SWITCH SETTINGS

Not Applicable – The dip switches are on the PE Module. Contact factory for non – standard settings.

* NOTE: Opening the MIU for any reason voids the factory warranty.


9. LED INDICATOR

The MIU has a single LED that will indicate the following conditions...

4

Blinking: POWER ON

4

Steady: MODEM CONNECTED (CARRIER DETECT)

10. AUTO RESET FEATURE

The dial-up modem modules inside your MIU include an “Auto Reset” feature: If the modem configuration is lost for any reason, it can be restored by dialing the modem and allowing it to ring 4 to 6 times.

The Auto Reset feature is enabled and disabled by a dip switch on the modem module. Your MIU will have been shipped with the Auto Reset mode active, unless otherwise specified at the time of ordering. Please consult Telenetics if you wish to open up your MIU to disable Auto Reset.

11. AUTO DIAL FEATURE

The dial-up modem modules inside your MIU include a software configured “Auto Dial” feature: Command AT\D1 will enable Auto Dial:

When DTR goes from an OFF to ON condition, and \D1 is set, the modem will auto dial the phone number stored in location & Z0 (up to 45 digits).

Command \D0 (default) will disable the Auto Dial feature.


12. OUTLINE DRAWING & MOUNTING


13. MODEM CONFIGURATION

Telenetics dial and leased line modems are based upon Rockwell chipsets.

These chipsets contain Rockwell’s “AT” command set.

A summary of the Rockwell command set for your MIU modem is provided in Book 2.

Unless otherwise specified at the time of order, your modem will have left the Telenetics factory in the configuration detailed on the following pages.

The Telenetics factory configuration differs from the Rockwell default configuration as follows...

&C1 Telenetics Factory Carrier Detect (CD) only ON

when

S0=0

S0=1

Rockwell Default

Telenetics Factory

Auto-Answer OFF

Auto-Answer on first ring

You can review the configuration of your modem by entering AT&V

<CR>.

You can restore the Rockwell factory configuration by entering

AT&F&W


14. FACTORY CONFIGURATION ~ MIU2.4

ACTIVE PROFILE:

B1 E1 L2 M1 Q0 V1 X4 Y0 &C1 &D0 &G0 &J0 &L0 &P0 &Q0

&R0 &S0 &X0 &Y0 S00:001 S01:000 S02:043 S03:013 S04:010

S05:008 S06:002 S07:030 S08:002 S09:006 S10:014 S12:050

S14:AAH S16:00H S S18:000 S21:00H S22:76H S23:15H S25:005

S26:001 S27:40H S28:00H

STORED PROFILE 0:


&R0 &S0 &X0 S00:001 S14:AAH S18:000 S21:00H S22:76H

S23:17H S25:005 S26:001 S27:40H S28:00H



&R0 &S0 &X0 S00:000 S14:AAH S18:000 S21:00H S22:76H

S23:17H S25:005 S26:001 S27:40H S28:00H

TELEPHONE NUMBERS

&Z0=

&Z1=

&Z2=

&Z3=



ACTIVE PROFILE:

B1 E1 L1 M1 N1 Q0 T V1 W0 X4 Y0 &C1 &D2 &G0 &J0 &K3

&Q5 &R1 &S0 &T5 &X0 &Y0 S00:001 S01:000 S02:043 S03:013

S04:010 S05:008 S06:002 S07:050 S08:002 S09:006 S10:014

S11:095 S12:050 S18:000 S25:005 S26:001 S36:007 S37:000

S38:020 S44:020 S46:138 S48:007 S95:000



&Q5 &R1 &S0 &T5 &X0 S00:001 S02:043 S06:002 S07:050

S08:002 S09:006 S10:014 S11:095 S12:050 S18:000 S36:007

S37:000 S40:168 S41:195 S46:138 S95:046



&Q5 &R1 &S0 &T5 &X0 S00:001 S02:043 S06:002 S07:050

S08:002 S09:006 S10:014 S11:095 S12:050 S18:000 S36:007

S37:000 S40:168 S41:195 S46:138 S95:000

TELEPHONE NUMBERS:

0= 1=

2= 3=



ACTIVE PROFILE:


&Q5 &R1 &S0 &T5 &X0 &Y0 S00:001 S01:000 S02:043 S03:013

S04:010 S05:008 S06:002 S07:050 S08:002 S09:006 S10:014

S11:095 S12:050 S18:000 S25:005 S26:001 S36:007 S37:000

S38:020 S44:020 S46:138 S48:007 S95:000



&Q5 &R1 &S0 &T5 &X0 S00:001 S02:043 S06:002 S07:050

S08:002 S09:006 S10:014 S11:095 S12:050 S18:000 S36:007

S37:000 S40:168 S41:195 S46:138 S95:046



&Q5 &R1 &S0 &T5 &X0 S00:001 S02:043 S06:002 S07:050

S08:002 S09:006 S10:014 S11:095 S12:050 S18:000 S36:007

S37:000 S40:168 S41:195 S46:138 S95:000


0= 1=

2= 3=



ACTIVE PROFILE:


&Q5 &R1 &S0 &T4 &X0 &Y0 S00:001 S01:000 S02:043 S03:013

S04:010 S05:008 S06:002 S07:030 S08:002 S09:006 S10:014

S11:255 S12:050 S18:000 S25:005 S26:001 S36:007 S37:000

S38:020 S46:138 S48:007 S95:000



&Q5 &R1 &S0 &T4 &X0 S00:001 S02:043 S06:002 S07:030

S08:002 S09:006 S10:014 S11:095 S12:050 S18:000 S36:007

S37:000 S40:105 S41:003 S46:138 S95:000



&Q5 &R1 &S0 &T4 &X0 S00:001 S02:043 S06:002 S07:030

S08:002 S09:006 S10:014 S11:095 S12:050 S18:000 S36:007

S37:000 S40:105 S41:003 S46:138 S95:000


0= 1=

2= 3=


15. DIAGNOSTICS

The following pages provide software and hardware techniques for diagnosing communication problems and thereby isolating the problem at either the local modem, the remote modem or the interconnecting line.

The following AT&Tn commands form part of the CCITT V.54 protocol and can be used for diagnostic testing.

Note: &Tn commands can only be used when the modem is configured for

&Q0 <CR> (unbuffered/direct asynchronous mode).


&T0 TERMINATE TEST IN PROGRESS

If a V.54 loopback test is in progress as a result of executing an &Tn command, then the &T0 command will cause that test to be terminated, provided that the modem is in the command state or a V.54 state that accepts commands from the DTE. See specific &Tn command descriptions for termination actions.

&T1 INITIATE LOCAL ANALOG LOOPBACK (See Figure 2)

When the AT&T1 command is entered, the modem goes on hook and configures itself for analog loopback. DSR is turned off (if &S1 is in effect), the analog loopback state is entered, and the test timer is set to the value in S18. A connect result code is sent to the DTE, and the test timer then begins its count down. The test terminates when the test timer expires. If S18 equals 0, then the test must be terminated by an &T0, H0, or Z command. While any command may be entered while the modem is in this test state, the modem response is not specified except for H0, &T0 and Z, any of which will terminate the test. Upon termination of the test, the modem enters the command state.

RESULT CODE DESCRIPTION

CONNECT

ERROR

OK

When local analog loopback state is entered.

If any other &Tn test is active (except

&T0) or if in the on-line command state.

After test is stopped by test timer, the

H0 command, or the &T0 command.


&T2 NO FUNCTION

&T3 PERFORM LOCAL DIGITAL LOOPBACK (See Figure 3)

The modem must be in the command state with connection established when this command is issued, otherwise an ERROR result code occurs.

The AT&T3 command establishes a loopback of received data, after demodulation, and sends it back to the distant end. The modem is configured for local digital loopback, DSR is turned off (if &S1 is in effect), the test timer is started with the value in S18, and an OK result code is sent to the DTE. If S18 contains a 0, the test must be terminated by a &T0, H0, or Z command. The latter two result in the modem going on hook. If S18 does not contain 0, the test is terminated after the number of seconds stored in S18.


OK

ERROR

After 2 second delay

If any other self test is active (&T1,

&T6, &T7 or &T8) or if in idle state.

When

&T4 GRANT REMOTE DIGITAL LOOPBACK (RDL) REQUESTS

When in the on-line state, the modem will honor a remote digital loopback request from a distant modem if it occurs. This will result in an

ERROR if the command is given while any V.54 test is active (&T1, &T3,

&T6, &T7 or &T8).

NOTE: There are data patterns that may cause a Remote Digital

Loopback conditions. Care should be given to the type of data being received so that no RDL modes will be initiated.


&T5 DENY RDL REQUESTS

The modem will not respond to a remote digital loopback request from a distant modem. This will result in an error if the command is given while any V.54 test is active (&T1, &T3, &T6, &T7 or &T8).

&T6 INITIATE REMOTE DIGITAL LOOPBACK (See Figure 4)

The command is valid only if the modem is in the command state with a connection established.

Configure the modem under test with an AT&T4 command so that it will honor a remote digital loopback request.

Enter AT&T6 at the local modem and it will send a remote digital loopback request to the remote modem. After the RDL acknowledgement signal is received from the remote modem, DSR is turned off (if &S1 is in effect), the on-line state is entered, a CONNECT result code is sent to the

DTE, and the test timer is set to the value in S18.

If the local modem does not receive the RDL acknowledgment signal from the remote end in three seconds, it sends an ERROR result code to the DTE and returns to the command state. The local modem sends the signal to release the remote digital loopback when the test is terminated.

The test may be terminated by the H0, Z, or &T0 command. The test will also terminate when the test timer expires (sending the modem to the command state) or carrier is lost (causing a NO CARRIER result code and the modem to go on hook in the command state).


CONNECT

ERROR

ERROR

ERROR

When on-line state is entered.

If any V.54 test is active (&T1, &T3,

&T6-&T8).

If not in on-line command state.

If the RDL signal is not acknowledged.

&T7 INITIATE RDL WITH LOCAL SELF TEST (See Figure 5)


This is a system test, end to end.

The command is valid only if the modems are in the command state with a connection established.

Configure the remote modem with an AT&T4 command so that it will honor a remote digital loopback request.

Enter AT&T7 at the local modem and it will send a digital loopback request to the remote modem. After the RDL acknowledgment signal is received from the remote modem, DSR is turned off (if &S1 is in effect), the on-line state is entered, an OK result code is sent to the DTE, and the test timer is set to the value in S18. While the test is active, the local modem sends a test message to the remote modem and counts the errors in the received (looped back) signal. The modems stay in the command state during the test. When the test is terminated (except by a loss of carrier), the local modem sends the release signal to the remote modem, as in &T6, and reports the three-digit error count to the DTE.

The information text is followed by an OK result code. The test is terminated by loss of carrier, or an H0, &T0, or Z command, and by the

S18 timer running out.

RESULT CODES DESCRIPTION

OK

OK

ERROR

ERROR

When command executed is started.

After error count is sent to DTE (&T1,

&T6, &T8).

If not in on-line command state.

If the RDL signal is not acknowledged.


&T8 LOCAL LOOPBACK WITH SELF TEST (See Figure 6)

The modem should be on hook. Enter AT&T8 to configure the modem for analog loopback and self test. The test timer is started at the time indicated by S18, DSR is turned off (if &S1 is in effect). A self test condition is entered, and an OK result code is sent to the DTE. During the test the modem sends a test message and counts errors in the looped back signal. The test is terminated when the timer times out (S18) or the

&T0, H0, or Z command is issued. When the test is terminated, the three digit error count is sent to the DTE. An OK result code follows the error count.

RESULT CODE

OK

OK

ERROR

DESCRIPTION

If a test state is entered.

After error count is sent to DTE

If any other V.54 test is active (&T1, &T3,

&T6, &T7), or if on-line.





ADDITIONAL TEST / DIAGNOSTICS COMMANDS...

%L RECEIVED SIGNAL LEVEL

Returns a value (-dBm) which indicates the received signal level at modem DATA PUMP interface. This value is determined by the loss/gain of modem Telco Interface circuit

±dB at the Tip/Ring input to the modem. Typical value should be -25dBm to -35dBm for most Telco connections.

%Q RECEIVED LINE SIGNAL QUALITY

Reports the line signal quality at the modem DATA PUMP interface. This signal is also dependent on the DAA circuit

(Telco Interface). Returns the higher order byte of the EQM

(Eye Quality Monitor is the filter squared magnitude of the error vector). Typical value should be below 10. The lower the number, the better the performance from the modem.

S86

ERROR response if NO connection to remote modem.

In &T1, modem %Q will be 0.

CONNECTION FAILURE CAUSE

S86 can help determine the cause of a connection failure.

When the modem issues a NO CARRIER result code, a value is written to this register. To read this register, following the connection failure, issue ATS86? <CR>. The modem will report one of the following values...


9

10

11

0

4

5

6

Normal hang up; no error occurred.

Physical carrier loss. (Loss of Carrier)

Feature negotiation failed to detect presence of another V.42 error-control modem at other end.

Other error-control modem did not respond to feature negotiation message sent by this modem.

7 Other modem is synchronous-only; this modem is

asynchronous-only.

8 Modems could not find a common framing technique.

12

13

Modems could not find a protocol in common.

Feature negotiation message sent by other modem incorrect.

Synchronous information (data of flags) not received from other modem.

Normal disconnect initiated by other modem.

14

Other modem did not respond after many transmissions of the same message. Modem made 10 attempts then hung up.

Protocol violation occurred.

Note: Multiple occurrences may contribute to a NO CARRIER message; S86 records the first event that occurred.


NOTES:


Installation, Operation &amp; Diagnostics MIU/PowerPort Series

for the

(See Book 2 for AT Commands)

Telenetics Corporation

TABLE of CONTENTS

1. STANDARDS

2. PRODUCT OVERVIEW

module. The baseboard includes the power supply regulation and surge

Express™ Dial Modem Module.

Environment:

Power Supply:

Low Power:

Industrial:

3. GENERAL PRODUCT SPECIFICATIONS

MIU PowerPort 2.4:

MIU PowerPort 9.6:

MIU1 PowerPort 4.4:

MIU PowerPort 28.8:

4. POWER MODES

Mode Description

Power On

Sleep

Factory Setting: Full power is always

Power Down If the modem is on hook for 30 seconds,

Power

Consumption

5. MODEM SPECIFICATIONS

6. POWER CONNECTIONS

DC Power Jack, 2.0mm – This standard concentric jack is provided to attach an

DB – 25, Pin 10 – A DC voltage may be applied at the 25 pin data connector. DC

7. SERIAL DATA PORT PIN-OUTS

8. DIP SWITCH SETTINGS

9. LED INDICATOR

10. AUTO RESET FEATURE

11. AUTO DIAL FEATURE

12. OUTLINE DRAWING & MOUNTING

13. MODEM CONFIGURATION

14. FACTORY CONFIGURATION ~ MIU2.4

ACTIVE PROFILE:

STORED PROFILE 0:

STORED PROFILE 1:

TELEPHONE NUMBERS

14. FACTORY CONFIGURATION ~ MIU9.6

ACTIVE PROFILE:

STORED PROFILE 0:

STORED PROFILE 1:

TELEPHONE NUMBERS:

14. FACTORY CONFIGURATION ~ MIU14.4

ACTIVE PROFILE:

STORED PROFILE 0:

STORED PROFILE 1:

TELEPHONE NUMBERS:

14. FACTORY CONFIGURATION ~ MIU28.8

ACTIVE PROFILE:

STORED PROFILE 0:

STORED PROFILE 1:

TELEPHONE NUMBERS:

15. DIAGNOSTICS

&T0 TERMINATE TEST IN PROGRESS

&T1 INITIATE LOCAL ANALOG LOOPBACK (See Figure 2)

RESULT CODE DESCRIPTION

&T2 NO FUNCTION

&T3 PERFORM LOCAL DIGITAL LOOPBACK (See Figure 3)

RESULT CODE DESCRIPTION

&T4 GRANT REMOTE DIGITAL LOOPBACK (RDL) REQUESTS

&T5 DENY RDL REQUESTS

&T6 INITIATE REMOTE DIGITAL LOOPBACK (See Figure 4)

RESULT CODE DESCRIPTION

&T7 INITIATE RDL WITH LOCAL SELF TEST (See Figure 5)

RESULT CODES DESCRIPTION

&T8 LOCAL LOOPBACK WITH SELF TEST (See Figure 6)

RESULT CODE

DESCRIPTION

ADDITIONAL TEST / DIAGNOSTICS COMMANDS...

%L RECEIVED SIGNAL LEVEL

%Q RECEIVED LINE SIGNAL QUALITY

S86

CONNECTION FAILURE CAUSE

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