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13 Hicom 150 E Office on a LAN

13.1 Overview

Chapter Contents

This chapter discusses the topics listed in the table.

Topic 

 
If you need any information that goes beyond the contents of this chapter, please refer to the Endeavor Installation Guide which is available in pdf format.  

13.2 Introduction

In Release 2.2 and earlier, Hicom 150 E Office provided access to data environments though the following interfaces:

CSTA interface (V.24, USBS)
Call charge interface (V.24) and optiset E data adapter (TA RS232) or optiset E control adapter (TA API) for Hicom Attendant P Office (PC-VPL)
Hicom Assistant E Office (V.24, X.75, analog)

The following new LAN functionalities (TCP/IP protocol family) are available:

Release 2.2 SMR-J and later:
SNMP, Hicom Assistant E Office (TCP), CDRC (TFTP server mode).
Release 3.0 and later:
CSTA Phase II and Phase III (TCP), CDRC (TFTP client mode and TCP/IP client mode).

Monitoring and control of the LAN components are provided by the Simple Network Management Protocol (SNMP).

13.3 SNMP Functionality

13.3.1 Introduction

As part of the TCP/IP protocol family, the Simple Network Management Protocol (SNMP) is an easy-to-use platform for performing management tasks in the Hicom 150 E Office system software. SNMP is used as a kind of management agent in Hicom 150 E Office, making it possible to monitor and administer LAN components (including Hicom 150 E Office itself) from a central location. This involves

addressing Hicom 150 E Office via TCP/IP
allowing external management applications, such as HP Open View and IBM Tivoli, to access data in Hicom 150 E Office (using SNMP messages, such as GET, SET, TRAP)
implementing remote maintenance tasks (online port status, enabling and disabling ports, determining free ports)
transmitting service-related class B errors
visualizing the operating status of a Hicom 150 E Office system

13.3.2 Overview of SNMP Functions

Management Information Bases (MIBs)

MIBs define the volume of data that can be administered via SNMP. They are data models that describe the network elements to be administered in a very specific form.

Hicom 150 E Office supports

standard MIB II (according to the RFC1213 Internet standard), which provides Internet and router functions;
parts of the RMON 1/2 standard MIBs (RFC 1757, RFC 2021), which support
Error history
Trap configuration
TFTP configuration
General system information
a user-specific MIB that processes Hicom-specific statistic data (feature counters) and internal error messages (error history), covering the following areas:
ControlGroup - status variables, general configuration, supplementary TFTP configuration data
SystemInfoGroup - system configuration and status
StatisticsGroup - statistic data on features
ErrorHistoryGroup - Error history in Hicom format
Error messages are forwarded in the form of SNMP traps via the LAN to a specific external management application. The SNMP traps form the error history data structure (time stamp, error class, error description).

These components use the IP protocol according to OSI layer 3 and the UDP protocol according to layer 4. The SNMP protocol stack uses port numbers. The system supports the SNMP protocol version 1.0.

SNMP Messages

The following commands control SNMP messages for communication between the SNMP management agent (Hicom 150 E Office) and external applications:

GET - retrieve data from agent
GET NEXT - read out data sequentially
SET - write data
TRAP - alarm messages issued by the SNMP agent

There is an integrated mechanism for generating SNMP traps in the event of class B errors. The SNMP management agent evaluates the error messages. In the case of defined errors, it generates specific traps and transmits them in the form of IP data records to a configurable IP address (a total of five SNMP V1.0-compatible applications are supported, including HP Open View Network Node Manager).

13.4 CSTA via IP

Hicom 150 E Office uses the Transmission Control Protocol (TCP) for CSTA via IP, detecting and automatically correcting lost data packets over a permanent connection.

A total of three CSTA clients or applications can connect to Hicom 150 E Office simultaneously over the LAN, and thus can use CSTA over IP simultaneously. Restrictions may apply to applications that use certain services. For example, only one application at a time can start the message registration function.

Figure 13-1 Hicom 150 E Office - CSTA via IP

For an external application to address Hicom 150 E Office, it must know the TCP port (7001) of the TCP/IP server implemented in Hicom 150 E Office as well as the IP address.

To set up calls, you need to administer the firewall in Hicom Assistant E Office (by entering the IP address of the CSTA client and enabling the CSTA application). By default, access is only via Hicom Assistant E Office (the first IP address in the firewall is 0.0.0.0). The system then requests the user name and password to authenticate the CSTA client. You can use Hicom Assistant E Office to draw up a list of five IP client addresses with access authorization.

Data packets sent from an application to Hicom 150 E Office -- that is, packets containing the Hicom IP address, TCP port 7001, and protocol type TCP -- are accepted for further processing.

Model-Specific Data
Subject 
Pro 
Com 
Point 
One 
Start 
Feature available in 
x 
x 
- 
- 
- 
HW requirements 
SW requirements 
Rel. 3.0 and later 

Configuring the Feature Using Hicom Assistant E Office

Prerequisite: Hicom 150 E Office must already be registered on the LAN (see Section 13.6).

Configure the feature using Hicom Assistant E Office as follows:
Step 
Action 
1.  
Define IP addresses of the five clients with access authorization 
Options  
2.  
Network 
3.  
Communication Partner 
4.  
Table: Firewall 
5.  
Line: Enter the IP address of the CSTA client and set the application flag (CSTA). 

13.5 Call Detail Recording Central (CDRC) via IP

In Hicom 150 E Office, you can start up the central call data output function only once, which means that it is available to only one application at a time. Three different modes exist to support the various requirements of the different applications.

Model-Specific Data
Subject 
Pro 
Com 
Point 
One 
Start 
Feature available in 
x 
x 
x 
- 
- 
HW requirements 
SW requirements 
Rel. 3.0 and later 

13.5.1 TFTP Client in Hicom 150 E Office

Figure 13-2 CDRC via IP - TFTP Client in Hicom 150 E Office

Controlled by a programmable timer and a fixed threshold value determining the call data buffer capacity (around 80 percent of the call data buffer full), the TFTP client (Hicom 150 E Office) sends call data to the TFTP server (external application). If Hicom cannot set up a connection to the TFTP server, it addresses an alternative server. If this server is also unavailable, it outputs an SNMP trap or error message ("Unable to output data"). The system tries to set up another connection every 60 seconds. A call data buffer overflow causes an error message to to entered in the error history file.

Use Hicom Assistant E Office to configure the server and timer IP addresses.

13.5.2 TCP Client in Hicom 150 E Office

Figure 13-3 CDRC via IP - TCP Client in Hicom 150 E Office

When call data records accumulate, the TCP client (Hicom 150 E Office) sets up a TCP/IP connection to an external TCP server (external application) and transmits the data. The connection remains active continuously so that the system can send any further accumulated data, transmitting each data record separately.

Use Hicom Assistant E Office Office to configure the server's TCP/IP address (TCP port and IP address).

13.5.3 TFTP Server in Hicom 150 E Office

Figure 13-4 CDRC via IP - TFTP Client in Hicom 150 E Office

The external application (TFTP client) requests output of the call data records. To do this, the application must set up a connection and indicate the service (GET gez.txt), after which it receives all accumulated call data records. It releases the connection after the transfer.

Note: The IP address of the TFTP client must be entered in the firewall and the "call charges" application flag set.

The application's request for call data can be controlled automatically or using an SNMP trap (see Section 13.3). Hicom 150 E Office sends the SNMP trap ("data available") to the external application, generating the trap using a programmable threshold value determining the call data buffer capacity (0 to 80 percent of the call data buffer full). Use Hicom Assistant E Office to configure the threshold value.

Configuring the Feature Using Hicom Assistant E Office

Prerequisite: Hicom 150 E Office must already be registered on the LAN (see Section 13.7).
Configure the feature using Hicom Assistant E Office as follows:
Step 
Action 
1.  
Configure CDRC via the LAN 
System status  
2.  
Call charges 
3.  
Output format 
4.  
Port assignment: CDR system, output -> LAN 
5.  
LAN settings:  
CDR system: 
TFTP client
IP address, server 1
IP address, server 2 (alternative server)
Output time
TCP client
IP address and TCP port of external server
TFTP server
Threshold in percent
Output format: 
File format: UNIX (LF) or DOS (CR/LF)
Separator: ";" (semicolon), "|" (pipe) or " " (space)

 
You cannot use Hicom Assistant T to configure this feature.
If CDRC over IP (LAN) is set, you can use Hicom Assistant T only to switch to V.24 port, UP0/E port, Hicom Attendant P Office (PC AC) or "no output".  

13.6 TFTP Read and Write Access

All data transmitted must be in binary format.

Table 13-1 TFTP Read and Write Access

File 
TFTP-GET 
TFTP-PUT 
Explanation 
hicom.kds 
 
CDB file 
hicom.fli 
 
APS file 
log.arc 
 
LOG file for 10 MB flash memory card 
get.txt 
 
Call detail recording at station 
gel.txt 
 
Call detail recording per trunk 
gez.txt 
 
Call detail recording central 
ascii.txt 
 
Configuration in ASCII format 

13.7 Registering Hicom 150 E Office on the LAN

If you are upgrading or installing a Hicom 150 E Office system with a com server for the first time--Com Server Adapter (OfficePro) or V.24/E board (OfficeCom, OfficePoint)--you must communicate a number of settings to the LAN.

You need to add the LAN connection information to the customer database (CDB), if one already exists in the system.

Procedure: Add Information for LAN Connection to Existing CDB

Step 
Action 
1.  
Download and back up an existing Hicom 150 E Office CDB, using Hicom Assistant E Office. 
2.  
If necessary, update the CDB to Release 3.0. 
3.  
Open the Network dialog box from the Settings menu. 
4.  
Activate the IP Parameters tab and make the following settings: 
IP interface (Com Server Adapter or V.24/E board of Hicom 150 E Office)
IP Address: IP address that the customer has assigned to Hicom 150 E Office.
Subnet Mask: enter the subnet mask.
Gateway IP Address: IP address of the closest gateway router (may not be necessary).
MTU: Maximum Ethernet frame length. Do not change the default value.
IP access
Inactive: LAN function deactivated.
SLIP Forwarding: The com server has the same address as Hicom 150 E Office and is running in transparent mode.
SLIP Routing: (in this case, you can administer the input fields under Hicom 150 E Office.) Hicom 150 E Office is assigned a different IP address than the com server (possibly even a separate subnet).
HIP Forwarding: Use the Hicom Xpress @LAN card instead of the Com server for LAN access. This card works in bridging mode, which means that the Hicom Xpress @LAN card and Hicom 150 E Office controller have separate IP addresses that share a physical LAN interface.
TFTP Server (entries for APS transfer via the LAN)
IP Address: This is the IP address of the TFTP server providing the APS for Hicom 150 E Office.
Path: Enter the path where the APS is located.
Changeover Time: Enter the date and time at which you want Hicom 150 E Office to change over to the transferred APS. An immediate or scheduled changeover after the TFTP transfer must be SNMP-initiated.
Hicom 150 E Office
IP Address: This box contains the IP address under which the com server addresses Hicom 150 E Office. Normally, you should select the default SLIP configuration (1.0.0.1) as the IP address.
Subnet Mask: Subnet mask at the interface between Hicom 150 E Office and the com server.
MTU: Maximum Ethernet frame length on the link between Hicom 150 E Office and the com server. Do not change the default value.
Routing Table: Do not change any of the values entered here.
Baud Rate: 2400, 9600, or 19200 baud (19200 baud recommended), for the connection between Hicom 150 E Office and the Com Server Adapter or the V24/E board.
5.  
Activate the SNMP Data tab and make the following settings: 
System Identification (entries for the standard MIB RFC 1213 (MIB-2))
Contact Person: Name of the technical support person responsible for Hicom 150 E Office.
System Name: Name of the Hicom 150 E Office system. The SNMP environment requires the domain name.
Location: Information about the Hicom 150 E Office location.
Activate SNMP: This option activates the SNMP in the Hicom 150 E Office system.
Multiple Traps: Multiple trap repetitions.
Trap Flags
Class column: For each error type that can be signaled by an SNMP error message (trap), you must specify whether you want the system to only create an entry to be made in the error history file or also initiate a trap.
Error Number column: Numbers of the class B errors.
Meaning column: Plain-text description of the error event.
Value column: log = enter in error history only; log + trap = enter in error history and also initiate a trap; log + multiple trap = enter in error history and also send a trap multiple times (SNMP error message).
6.  
Activate the Communication Partner tab and make the following settings: 
SNMP Community table (configure the communication partners, which are authorized to administer the Hicom 150 E Office system via SNMP.)
SNMP Transport Label column: Enter a specific IP address or a wildcard (everybody, nobody).
SNMP Community Name column: serves the purpose of an access password in SNMP Version 1.0.
SNMP Authorization column: Possible settings are read (the IP address has read access only), read/write (the IP address has read and write access), and none (the IP address has no access authorization. This option enables you to temporarily deactivate entries without having the delete them).
SNMP Trap Community table (configures the destinations for SNMP error messages/traps)
SNMP Community Name column: Identifies the community to which the trap is assigned.
SNMP Transport Label column: IP address of the trap destination. You cannot enter wildcards for traps.
Destination Owner column: Plain-text description of the trap destination (optional).
Destination Status: This allows you to activate and deactivate configured trap destinations.
Firewall table (Access authorizations for a total of five external applications by entering the IP addresses and setting the application flags.)
IP Addresses column: IP address of an external application Note: If IP address 0.0.0.0 is entered, only Hicom Assistant E Office is authorized for access (default setting).
Telnet column: Telnet acces is allowed.
Note: Telnet emulates the Hicom Assistant T functions (see Section 13.9).
CSTA column: CSTA via TCP/IP is allowed.
APS column: APS transfer via TFTP is allowed.
CDB column: Reading the customer database via TFTP is allowed.
Assistant Office column: Hicom Assistant E Office access via TCP/IP is allowed.
LOG column: Read log file via TFTP is allowed.
CDR column: Call charge output via TFTP is allowed.
ASCII column: Read basic system configuration via TFTP is allowed.
7.  
Save the CDB and transfer it to Hicom 150 E Office. 

13.8 Testing the IP Address of Hicom 150 E Office

After copying the updated CDB back to the system, you should run some tests to determine whether the connection data is correct. The Ping and Telnet programs, which come with the PC operating system, are available for these tests.

Procedure: Test the IP Address

Prerequisite: You must be working at a PC on the LAN or have set up a local network between the service PC (Hicom Assistant E Office) and the IP port (com server) of the Hicom 150 E Office system using a crossover patch cable.
Step 
Action 
1.  
Open an MS-DOS box. 
2.  
Enter the command PING <IP ADDRESS>
(Example: C:\WINDOWS\PING 192.168.100.11).
You already defined the IP address of the Hicom 150 E Office system in step 4 on page 13-11
3.  
The following should appear in response: 
Pinging 192.168.100.11 with 32bytes of data: 
Reply from 192.168.100.11: bytes = 32 time=80ms TTL=251 
Reply from 192.168.100.11: bytes = 32 time=80ms TTL=251 
Reply from 192.168.100.11: bytes = 32 time=80ms TTL=251 
Reply from 192.168.100.11: bytes = 32 time=80ms TTL=251 
4.  
If you do not receive a reply to the command: 
The IP address of the Hicom 150 E Office system may be incorrect.
Hicom 150 E Office may not be ready.
If you issued the ping command from outside the gateway, the gateway IP address may be incorrect. Check the remote network segment to ensure that the gateway IP address is correct.

Final Tests

Run the following additional tests:

IP functions in Hicom Assistant E Office
Hicom 150 E Office should now be able to perform all read and write operations via the LAN. Open the Network menu and go to the Communication tab (activate IP). Then enter an IP address or a host name.
SNMP functions
If configured correctly, reply packets, such as error classes and numbers, should be visible.

13.9 Hicom 150 E Office Administration via Telnet

You can use Telnet to administer the Hicom 150 E Office system via the IP port (com server).

Procedure
Step 
Action 
1.  
Start the Telnet program with the IP address of the Hicom 150 E Office system.  
2.  
A mask appears where you can maximize the Telnet window (size of a telephone display with 24 lines and 8 characters per line). 
Press any key.  
3.  
After initialization is complete, a telephone user interface appears with an eight-line display. 
4.  
Enter *95 to start the administration function just like you would under Hicom Assistant T .  
Notes: If your Tenet program does not support function keys, you can use the "!", "$", "%" and "?" instead: 
F2 -> !
F7 -> $
F8 -> %
Speaker -> ?
The font set in the Telnet program determines whether you can display German umlauts. Use a font that displays the characters you need. 
Configure Telnet as follows: 
Character mode (if programmable)
VT100 arrows (under Terminal, Settings in MS Windows NT Telnet )
VT100/ANSI emulation
The arrow keys on the keypad have the following functions: 
Next -> Arrow Up/Right (use ">" key as an alternative)
Back -> Arrow Down/Left (use "<" key as an alternative)
If your program does not support arrow keys, use the "<" and ">" keys to scroll up and down. 
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