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Function
Communication between the service center and the Hicom 150 E Office communication system by means of the public telephone network for performing service is known as remote service. This service work includes:
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Remote administration, maintenance, and diagnostics |
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Remote software correction |
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Automatic trouble reporting |
Remote service is normally provided by a service center. This makes it possible to administer and maintain several different communication systems using the integrated modem.
For purposes of security, the connection to the integrated modem in the customer system can be set up by means of a callback call. In order to do this, one or more passwords must be set up in the system, along with the corresponding callback numbers.
The remote administration and maintenance functions can only be called up as independent applications from Hicom Assistant E Office. Hicom Assistant E Office has the same range of features via remote service that is available with on-site access.
Figure 12-1 shows the basic layout of equipment for remote operation.
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This feature facilitates programming the system remotely by transmitting DTMF signals. The user interface is the same as the user interface that appears when performing system administration on site (the menus are also the same). Passive remote DTMF administration mode must be enabled on the destination system.
In addition, the called party must activate remote administration for the current connection by invoking a procedure and entering a six-digit password.
Any user can activate active remote DTMF administration from any administration telephone in the source system using a code. For this to be possible, active remote DTMF administration mode must be enabled in the CDB.
Remote DTMF administration can be performed over analog or digital trunks. Remote DTMF administration can be executed on any Hicom 150 E system from any other Hicom 150 E system, as long as the system being administered is the same size as the administering system or smaller.
Service-related errors (class B errors) can be transmitted automatically to a service center via the integrated modem. Class A and C errors are not signaled; error memory can be displayed using Hicom Assistant E Office. Error signaling is set in 1-minute intervals from 1 minute minimum to 15 minutes maximum. If you set an interval that is too short or too long, the system reverts to the 15-minute default.
If the error history file shows a class B error after a timeout, the system sends a remote signal. To do this, the error signaling flag must be active and a callback number entered.
If a dialing attempt is unsuccessful (because the server was busy or unavailable), the system automatically redials the number at the end of the interval. Signaling is canceled after the fifth unsuccessful attept and is not resumed until another entry is generated in the error history file, transmitting any new error that have not yet been sent.
The error report consists of a header and the error data, which is transmitted in binary form. The header contains a unique identifier for the customer's system.
The service center can monitor the functioning of automatic error signaling. For this purpose, the system software generates a pseudo-error at selectable intervals as a function test.
Definition
The term outgoing refers to an automatic connection setup from the Hicom 150 E Office system to Hicom Assistant E Office. This connection can be set up either by Hicom Assistant E Office (callback) or, in the event of an error, by the system itself (error signaling). Outgoing can operate using either the integrated digital modem (B channel) or the integrated analog modem (IMOD).
The callback feature provides you with a further means of accessing the system (in addition to logon with/without code and enable procedure.)
Using remote error signaling, the system automatically reports any class B errors that occur to a remote service center.
Settings for Callback in System Administration
To activate callback, enter the following settings in system administration for Hicom 150 E Office:
ISDN access, CO |
-> |
Callback (302) |
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IMOD access |
-> |
Callback (303) |
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System admin |
-> |
Remote admin |
-> |
Callback connect. |
-> |
|
Dest. (3071) (for index 1-6) |
-> |
Password (3072) X.75 protocol (3073) |
Callback indexes 1 to 6 allow you to select six different callback numbers using the associated access codes (6 digits or less). The X.75 protocol can be selected for each position (yes or no). If you select yes, callback uses the digital modem (B channel); if you select no, callback uses the analog modem (IMOD).
Activating Callback Using Hicom Assistant E Office
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Click the activate callback button |
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Assign a callback index (1 to 6) |
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Enter a PIN for the callback index assigned |
After you have made the settings, have Hicom Assistant E Office dial into the system. The system records the callback request, stores the callback index, and clears down the connection.
After 10 seconds, Hicom 150 E Office initiates the callback using the station number associated with the callback index. As soon as the connection is set up, Hicom Assistant E Office can administer the system.
If the callback number is busy or incorrect, Hicom 150 E Office makes a total of 20 attempts at 10-second intervals. After this, callback is terminated and must be restarted using Hicom Assistant E Office.
Error Signaling Procedure
Error signaling is initiated when a class B error occurs in the Hicom 150 E Office system. No connection cleardown is carried out if you do not store a station number under callback index 1. If a station number is stored under callback index 1 (with the additional information described in Settings for Callback in System Administration on page 12-35), the system sets up a connection to a remote service center using this station number.
For the error message to be recorded, the Hicom Assistant E Office dialed in the remote service center must already have been switched to receive mode. If Hicom Assistant E Office receives an error signal in this mode, the error history is read out and then deleted, and the connection is cleared down.
If another error occurs, the same procedure is followed and the current error is entered in the same file on the Hicom Assistant E Office immediately after the previous entry.
The following can be configured using Hicom Assistant E Office:
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Station number of the error report recipient |
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Automatic function test (yes or no); time interval (1 to 7 days) |
You can configure Hicom Assistant E Office to receive error reports. In this case, Hicom Assistant E Office is ready to receive after startup. It stores the error reports in a predefined file and uses the same modem as remote administration and maintenance. For this reason, you cannot start a session on a remote system while receiving is in progress. Hicom Assistant E Office converts the binary error file to readable format for evaluation.
The integrated analog modem (IMOD) provides remote access to Hicom 150 E via any type of trunk, tie trunk, or subscriber line. The IMOD is a plug-in PCMCIA card you install on one of the following boards, depending on the system.
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CBMOD (Hicom 150 E OfficePro) |
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CBPC (Hicom 150 E OfficeCom) |
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CBPC (Hicom 150 E OfficePoint) |
To install the IMOD, first disconnect the system from the power source (use lockout/tagout [LOTO] procedures). Open the system housing and simply slide the card into the holding mechanism.
The IMOD is treated like a pseudo-port and receives a station number within the system that can be reached internally and by direct inward dialing (DID). The DID number can be removed manually to prevent access from the outside. A password ensures access control and the use of a callback call or direct access.
The customer can program an individual 5-digit PIN in system administration. You must enter this PIN in Hicom Assistant E Office to establish communication with the modem.
The default PIN does not provide access to the modem. This means that the customer must enter a PIN to access the modem.
The following parameters apply to analog modem mode:
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Transmission to V.22bis (2400 bd), V.32 (9600 bd), V.32bis (14,400 bd) |
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Error correction to V.42, MNP 2-4 |
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Data compression to V.42bis, MNP 5 |
This modem provides remote access via digital trunks, digital tie trunks, or S0 subscriber line circuits.
All systems in the Hicom 150 E Office product line have an integrated B channel modem for remote DTMF access. The system software supports X.75 data transmission using this modem.
The digital modem is treated like a pseudo-port and receives a station number within the system that can be reached internally and by direct inward dialing (DID). The DID number can be removed manually to prevent access from the outside.
The customer can program an individual 5-digit PIN in system administration. You must enter this PIN in Hicom Assistant E Office to establish communication with the modem.
The default PIN does not provide access to the digital modem. This means that the customer must enter a PIN to access the modem.
The PIN can be reset to the default using password-protected system administration (only using Assistant T).
Security Concept
In order to allow authorized users to access Hicom 150 E Office and prevent unauthorized accesses, users must be identified by means of a user name and authenticated by means of a password. This applies to all local and remote administration and maintenance procedures via Hicom Assistant E Office, Hicom Assistant T, Hicom Assistant C Office, Hicom Assistant TC Office and AMHOST.
As of Release 3.0 SMR-C, it is possible to choose from among the following security concepts when performing country initialization the first time the system is booted:
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Variable password concept (default) |
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Fixed password concept |
Example of initial logon via Hicom Assistant T
Step |
Input |
Explanation |
---|---|---|
1. |
*95 |
Start system administration |
2. |
31994 |
Default user name |
3. |
31994 |
Default password |
Step |
Input |
Explanation |
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4. |
XXXXX |
Enter new password (max. 15 characters) |
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5. |
XXXXX |
Confirm password entered under point 4 |
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6. |
29-5 |
Country initialization |
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7. |
X |
As of Release 3.0 SMR-C: Define password concept: 1 = Variable password concept 2 = Fixed password concept |
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8. |
XX |
Enter country code (refer to page A-29). The system is now booted with the country-specific default data. |
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Remarks:
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Variable Password Concept
Up to 16 users can be assigned their own user ID with an individual name, password and a user group from among six predefined user groups (in Table 12-16). These users can read and administer only the data released for their particular user group.
The first time a user logs on to the system, he or she must enter a user ID and define a new password (max. 15 characters from the optiset E character set), thus overwriting the default user name (31994) and default password (31994). This initial user is automatically assigned to the "System Maintenance" user group and is informed that no other users have yet been configured in the system and that he or she has been assigned "System Maintenance" rights. Additional users and their passwords can then be configured in user administration using Hicom Assistant E Office or Hicom Assistant T.
If a user forgets his or her password, the password must be deleted and reconfigured by another authorized user. If all authorized users forget their passwords, the only solution is to regenerate the system.
Fixed Password Concept
This concept uses only fixed user groups with default user names and default passwords that cannot be changed (sse Table 12-17). It is not possible to configure new users in user administration.
Changing the Password Concept
The password concept can be changed from fixed to variable and vice versa only using Hicom Assistant T. Country initialization must be performed again, thus resetting the entire contents of the customer database (including user names and passwords) to the basic (default) state.
If a country initialization is performed on a system with the variable password concept, the previously defined user names and passwords are retained if the password concept is not subsequently changed.
If a CDB in which the default user names/passwords have been changed is read out of the system, this CDB cannot be loaded in a Hicom 150 E Office system that has been converted to the fixed password concept. Before this CDB can be read, a user (user name/password) must be configured in the system that corresponds to a user group in the fixed password concept. Once this user has been configured, the CDB can be read out of the Hicom 150 E Office system and then loaded in the system converted to the fixed password concept under this user and its password.
User Groups of the Variable Password Concept
The table below shows the six permanently predefined user groups and their associated rights.
No. |
User Groups User Rights |
User Admin. |
Revision |
System Maint. (Service) |
Customer Admin. (Customer) |
Accounting |
Develop- ment |
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1. |
|
X |
X1
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2. |
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X |
X2
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3. |
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X |
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4. |
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X3
|
X |
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5. |
|
X |
X |
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6. |
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X3, 4 |
X4
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X |
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7. |
|
X |
User Groups of the Fixed Password Concept
The table below shows the non-modifiable user groups and their associated rights.
In all cases, a user's access rights (i.e. which data the user can read or administer) depends on the user group to which he or she is assigned.
Service Tools
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Hicom Assistant T and Hicom Assistant TC Office Logon by entering user name and password (independently of telephone lock) The system can be accessed only via the first two UP0/E ports on the first SLMO/SLU board. |
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Hicom Assistant E Office and Hicom Assistant C Office (local) Logon by entering user name and password |
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Hicom Assistant E Office (remote), direct connection Logon by entering user name and password Direct access is possible via the integrated digital modem (B channel) or the integrated analog modem. The customer must be enabled by defining a 5-digit access code. |
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Hicom Assistant E Office (remote), callback connection Logon by entering user name and password Access is possible via the integrated digital modem (B channel) or the integrated analog modem. A callback index must be defined. |
AMHOST
The AMHOST (Administration and Maintenance via HOST) feature allows Plus Products to read specific system data and to change it if necessary. In order to permit Plus Products to access the system, a user without a user group with the user name "AMHOST" and the default password "77777" is configured in the Hicom 150 E Office default user administration.
This password can be changed only under the variable password concept. In this case, the "AMHOST" user must be deleted and then configured with the same user name and a new password.
Chip Card Reader (for Deutsche Telekom AG only)
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Deutsche Telekom AG systems must not be switched to the fixed password concept. |
This feature provides additional security through an identification and authentication procedure that ensures access to Deutsche Telekom AG's communication systems only for those with proper authorization, locking out unauthorized persons.
The practical application of this concept uses a chip card. Deutsche Telekom's service PCs are equipped with chip card readers that allow the PCs to start up only after identifying the technician's individual chip card ID and verifying that the entered password is correct.
The chip card contains an indication of whether the Octopus E system family has been accessed.
To provide access for user groups as well as individual technicians, users can specify at logon whether they want to register under the chip card's group ID or or an individual one. In either case, the system enters the logon data into a log file so that the chip card user's actions can be clearly traced.
All Octopus systems come with default names and default passwords. At logon, if the system
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does not detect a chip card, the user must access the service PC under the default name and default password; |
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does detect a chip card, the user management function starts up immediately. |
In either case, the person logging on for the first time must be entered in the user management function:
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User name |
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User group (user admin, revision, system maintenance, administration, billing, development) |
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Password |
This information overwrites the default name and default password.
You can then enter other chip card users into the user management function using a chip card or manually.
When a CDB is saved on the hard disk, the user table (part of user administration) with user names and the associated, encrypted passwords is also saved. This means that access rights are retained even when the offline CDB is subsequently opened.
In order to open the offline CDB, users must enter their user name and password. The entered data is compared with the user table and the access rights are determined by the user group found.
When an offline CDB is loaded in the Hicom 150 E Office system, the associated user table is not loaded in the system since this would corrupt the system-specific user administration.
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When a default CDB is generated offline, a default user table is created. A CDB generated in this way can be loaded in a default system only. |
In Hicom 150 E Office Rel. 2.0 and later, there is a new function in the data security concept for logging administrative procedures. This feature includes recording, evaluating, and archiving the activities.
The logging function records all changes to customer-related data and is based on when, who, and what criteria. This enables you to specify which users can manipulate which data at which time.
This information is stored in an area reserved for this purpose (LOG file) on the flash memory card. A revisor (user with revision authorization) can copy this data from the system to a PC and store it there, view it on the monitor, and print it as needed.
A log entry contains the following basic information:
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Date and time (when) |
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User name and user group (who) |
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Format identification (describes the type of activity performed) and command input (what) |
1. |
Hicom Assistant T format |
2. |
Hicom Assistant TC format |
3. |
Session information |
4. |
Hicom Assistant E Office database |
5. |
Application program system |
6. |
Hicom Assistant E Office maintenance |
7. |
Simulated or pseudo Hicom Assistant T format |
8. |
Hicom Assistant E Office online |
System access can be via Hicom Assistant (T or E) as well as by means of Plus Products, using AMHOST.
After establishing a connection to the system using Hicom Assistant, you can make configuration changes and perform administration tasks, which are also logged. Because the Hicom Assistant T and Hicom Assistant E Office tools have different characteristics, both logs are written separately.
The what information in the system log includes:
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Format identification: (3) Session information |
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Command input: |
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A0-1: Login procedure |
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A0-2: Logout procedure |
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A0-3: Login attempt denied |
Because this is a pseudo Assistant T command, the command input begins with a letter.
Plus Products can perform only a limited number of changes via AMHOST. Because the changes are automatic, for example with check-in and check-out functions in hotel Plus Products, the system does not log these changes specifically. These types of Plus Products log only LOGIN and LOGOUT actions (the user name is amhost).
There are several different ways to set up a Hicom Assistant T session. You can set up a direct connection to the system, use remote administration (touch tone), or use Hicom Assistant T as a Hicom Assistant E online option.
The system logs all actions regardless of the access method.
The what portion of a log entry includes:
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Format identification: |
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Command input: Enter the Hicom Assistant T (TC) command. |
The system logs the command set listed in the Hicom Assistant T (TC) menu tables, along with the most important parameters (such as the station number) needed for addressing.
All commands are logged in a one-to-one ratio. There are no collective commands (commands are not reduced for logging). Read access is not logged. A logged LOGON access defines the rights to read the individual data.
There are two kinds of log entries:
General Hicom Assistant E Office Database Activities
The what information in the system access log includes:
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Format identification: (4) Hicom Assistant E Office database |
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Command input: |
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A1-1: Database read |
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A1-2: Regenerate CDB |
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A1-3: Write database |
Specific Hicom Assistant E Office Changes
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The what information for specific Hicom Assistant E changes includes: |
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Format identification: |
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(7) Simulated Hicom Assistant T format |
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(7) Pseudo-Hicom Assistant T format (refer to Table 12-18) |
If you generate a database offline, or load a database from a data medium and then copy it to the system (write CDB), the system generates only one log entry (Regenerate CDB), and there is no way to compare the database. If the database is first generated by the system (read CDB) and then reloaded to the system (write CDB) after incorporating a number of changes, Hicom Assistant E Office generates the changes in the form of simulated Hicom Assistant T commands and forwards them to the system as a log entry before writing the database. The system makes the write database log entry after writing the database.
The system generates pseudo Hicom Assistant T commands for data areas that only Hicom Assistant E Office can modify. Pseudo objects are assigned to these data areas.
C1-xx = System parameters
C2-xx = System timer
C3-xx = S0 configuration
C4-xx = Trunks
C5-xx = Digit analysis
C6-xx = Daylight savings time
C7-xx = Routes
C8-xx = Entrance telephone
C9-xx = UCD flags
C10-xx = Delete system counters
Assistant T |
Variable |
Function |
---|---|---|
C1-1 |
System Flags/CMI |
|
C1-2 |
System Diversion/attendant |
|
C1-3 |
Tones and ring types |
|
C1-4 |
Rte# |
Routing flags/Special |
C1-5 |
System settings |
|
C1-6 |
Host Link Interface |
|
C1-7 |
Relocate activation |
|
C2-1 |
System timer |
|
C3-1 |
Subscriber bus |
|
C3-2 |
Line monitoring |
|
C3-3 |
Mode |
|
C4-1 |
Slot/trk# |
MSI parameters |
C5-1 |
Stn# | Grp# |
Internal station number |
C5-2 |
Service codes |
|
C6-1 |
Daylight saving time |
|
C7-1 |
Rte# |
Routing flags |
C8-1 |
Door# |
Entrance telephone |
C9-1 |
UCD flags |
|
C10-1 |
Delete system counters |
Using the LOG File (Requires a 10 MB Flash Memory Card)
You can read the file from the Transfer menu in revision mode. Click the Logging button to store the log data in a preselected file named *.arc. You can read this file with Notepad© or Wordpad©.
This activity loads new software to the system. The system logs the following information:
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Format identification: (5) Application program system |
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Command input: |
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A2-1: APSXF started |
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A2-2: APSXF completed |
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A2-3: APS startup (for example, A2-3-HE300M.00.001.01) |
Each time a communications server starts up (including the first time), the system generates a command entry (A2-3-..) to identify the APS currently being used by the communications server.
Hicom Assistant E Office generates the log entries and sends them to the system. A log entry contains the following:
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Format identification: (6) Hicom Assistant E Office maintenance |
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Command input: |
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B1-1: Read error memory |
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B1-2 : Delete error memory |
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B2-1: Out of service |
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B3-1: Read direct memory access |
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B3-2: Write direct memory access |
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B4-1: Delete base station status overload |
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B4-2: Delete base station status restart |
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B5-1: Digital loopback change |
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B6-1: Trunk rolling change |
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B7-1 : Read trunk status |
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B8-1: Delete trunk error counter |
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Format identification: (8) Hicom Assistant E Office online |
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Command input: |
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D1-1: Archive |
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D2-1: New user |
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D2-2: Delete user |
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D3-1: Change password |
Hicom Assistant E Office performs the action only after logging is completed.
You cannot turn the logging function on and off. It is carried out when a 10 MB flash memory card is provided. The next-to-the-last MB on the flash memory card is reserved for logging.
Assuming an average log size of 64 bytes, the log can contain up to 16,000 entries. It is therefore unlikely that the log file will exceed this size the first time it is programmed with Hicom Assistant T.
When the log is around 80 percent full, this triggers a class A error. The system treats this error like all other class A errors and displays revisor alarm on the screen.
If you do not archive the log at this point and an overflow is pending, the system deletes the oldest block (by overwriting the oldest entries).
Note the following when replacing the FMC card:
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If the logging memory area is empty, logging starts from the beginning. |
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If the logging memory area is not empty, the log entries are appended. |
Log entries are output using Hicom Assistant E Office. You can access the log entries from the system only after logging on as a user with revisor rights.
If you do not want to archive the log, you can retrieve, view, and print the log entries as the revisor. However, the log entries remain in the system.
If you do want to archive the log, the system first checks whether the archive file exists on the PC, whether the file matches the customer file, and whether the file is indeed a previous archive file. If the result is negative, the system asks you to perform certain actions or to cancel the archive operation.
If you want to archive the log entries, they are retrieved from the system, appended to the specified file, and deleted from the system. If any errors occur while doing this (such as line interruptions), the entire process ends and you must restart the archiving function.
You can use Hicom Assistant E Office to check the archive files on the PC monitor and print them if necessary, even without logging onto the system. The system will not prompt you for a password in this case.
Example Situation
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The system started up for the first time, was programmed with customer-specific data, and the revisor created the first archive. |
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Service then output the system database, changed 20 station names, and copied them back to the system. |
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The customer changed two more station names. The revisor then retrieved and printed the last few log entries. |
The printout is as follows (excluding the header and footer)
1050 |
97-11-25 15:57:10 |
rev(R) |
(6)D1-1 |
Archiving |
---|---|---|---|---|
1051 |
97-11-25 15:58:22 |
rev(R) |
(3)A0-2 |
Logout procedure |
1052 |
97-11-26 09:20:15 |
serv(S) |
(3)A0-1 |
Login procedure |
1053 |
97-11-26 09:21:35 |
serv(S) |
(4)A1-1 |
Database read |
1054 |
97-11-26 09:21:52 |
serv(S) |
(7)14-12-*(20) |
Station names |
1055 |
97-11-26 09:22:45 |
serv(S) |
(4)A1-3 |
Write database |
1056 |
97-11-26 09:23:25 |
serv(S) |
(3)A0-2 |
Logout procedure |
1057 |
97-11-26 10:10:15 |
pnkm(A) |
(3)A0-1 |
Login procedure |
1058 |
97-11-26 10:11:15 |
pnkm(A) |
(2)14-12-30 |
Station names |
1059 |
97-11-26 10:11:35 |
pnkm(A) |
(2)14-12-31 |
Station names |
1060 |
97-11-26 10:12:15 |
pnkm(A) |
(3)A0-2 |
Logout procedure |
1061 |
97-11-27 11:20:30 |
rev(R) |
(3)A0-1 |
Login procedure |
The following users were created in the example above:
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Revisor: rev in revision user group (R) |
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Customer: pnkm in administration user group (A) |
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Service: serv in system maintenance user group (S) |
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Hicom 150 H V1.0 - Hicom 150 E Office Rel.2.0-3.0 Service Manual | Siemens Part No.: P31003-M1550-X403-3-7620 | Conversion Date: 2000-08-24 |
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Contact: E-Doku-Team | © Siemens AG 2001 |