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8400B Plus Data Module User’s Guide
555-020-709
Issue 2
November 1996
About This Document
x
Security Issues
are security conscious and check the CDR/SMDR reports every morning
looking for suspicious activity. They will not see records of the calls
because CDR/SMDR was turned off by the hackers. The administrator
may notice the absence of CDR/SMDR records for evening, night, and
weekend calls made by employees.
NETCON Data Channels
The NETCON (Network Control) data channels provide internal access to the
system management capabilities of your DEFINITY® Communications System.
If the 8400B Plus Data Module is connected to a modem, or there is a modem
pool, your system may be at risk for toll fraud.
Expert toll hackers will target the administration and maintenance capabilities of
your system. Once criminals gain access to the administration port, they are
able to change system features and parameters so that fraudulent calls can be
made. In a modem pool or NETCON modem installation, this would also permit
a hacker to transfer to a NETCON extension, get data tone, and obtain a login
prompt — permitting transfer out to make toll calls.
If the data module or modem must be connected to a NETCON administration
port, then deny access to any high-risk features or endpoints by placing them in
restriction groups on the DEFINITY Communications System. This restricts their
accessibility from the incoming facility or endpoints that could transfer a call.
Also, use Class of Restriction to Class of Restriction (COR-to-COR) to restrict
stations from calling the NETCON data channels, so that only CORs allowed to
access the maintenance port are able to do so. For example, if voice mail
extensions have a COR of 9, and extensions assigned to NETCON channels
have a COR of 2, ensure that COR 9 does not have access to COR 2. Anyone
not authorized to use the NETCON channel should not be able to access it.
In addition, a data module or modem port used for voice mail maintenance or
administrative access is often a switch extension. It should be restricted in the
same manner as the NETCON channel.
020709_2.book Page x Friday, April 23, 1999 5:39 AM
- 8400B Plus Data Module 1
- User’s Guide 1
- Contents 3
- About This Document 5
- Organization of This Guide 6
- How to Order Documentation 7
- How to Comment on This 7
- Document 7
- Conventions Used 8
- NETCON Data Channels 10
- PBX Security Measures 11
- Security Issues 12
- Lucent Technologies Fraud 13
- Intervention 13
- Related Documentation 13
- Important Safety Instructions 15
- SAVE THESE INSTRUCTIONS 16
- Introduction 17
- Features 18
- Physical Description 19
- Front Panel 20
- Rear Panel 21
- Power Supply Unit 23
- CAUTION: 23
- Installation 25
- Procedure 26
- LINEPHONE 27
- -7 +8 27
- What You Need 28
- Hardware Installation 32
- PBX Wall Jack 33
- Initial System Checks 35
- Installation Options 36
- US Companding 37
- Telephone Provides Dialing 37
- Disable Data Metering Feature 38
- Loopback Test 40
- LED Indications 42
- Status of Unit 43
- LED Description 43
- Selecting PC Communications 45
- Packages 45
- If You Are Using a PC 46
- Configuration and Operation 47
- Issuing Commands 48
- Command Buffer 49
- Command Line Set Up 49
- Command Acknowledgment 50
- Repeating a Command 51
- Sample Command Lines 52
- Configuration Parameters 53
- Data Operation 56
- Storing a Telephone Number 57
- Automatic Answering 59
- Remote Site Use 59
- A Sample On-Line Session 62
- Starting the Session 62
- Possible Display Problems 63
- Disconnecting a Data Call 63
- Voice Operations 64
- Dialing Instructions 65
- Dialing Delay 65
- Dialing Pause 65
- Sample Command Line 66
- Troubleshooting 69
- How to Use This Chapter 71
- S7 does 72
- ATDP9,555-1212 75
- ATDP9,,555-1212 75
- 1 in the example) to the 76
- AT&D0 76
- AT Command Set 79
- Continued: 85
- 555-020-709 100
- November 1996 100
- Dial Modifiers 111
- S-Registers 119
- Label Description 144
- Data Loopback Test 153
- Local Loopback Test 155
- Self-Test 158
- Remote Loopback Test 159
- Remote Loopback Test with 161
- Communications 163
- Arrangement 166
- Quick-Reference Summaries 169
- Pin Circuit 178
- Name Direction Lead Name 178
- Glossary 185
- D (dial) command 187
- D command 187
- AT command set 187
- 555-020-709 Issue 2 191
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