Modifying the Cisco 200 Configuration Files

The following example illustrates the ISDNCFG1.EXP file that is created for the European protocol DSS1:

; Sample ISDN200.CFG File
; 
; Your Local Configuration 
;
NAME                 = MyHomeOffice 
;OWN MSN             = *
ACCEPTED MSN         = *
;
;Your Connecting Router Configuration
;
[HEADQUARTERS]
NAME                 = HEADQUARTERS 
PASSWORD             = Secret
DIALNUMBER           = .492395553333 ; The number to be dialed 
;                                      preceded by a period
;
;SERVICE              = DATA56  ; 56 Kbps Line speed
SERVICE               = DATA64  ; 64 Kbps Line speed
INACTIVITY TIMEOUT    = 20
;IPX                  = DISABLE ; To use IPX, comment out this
;                                 line using a leading 
;                                 semicolon.
;IP                   = DISABLE ; To use IP, comment out this
;                                 line using a leading
;                                 semicolon. 
MLB                   = DISABLE ; To use MAC Layer Bridging, 
;                                 comment out this line using a
;                                 leading semicolon.
INDICATED DIALNUMBER  = IGNORE  ; Ignore the DIALNUMBER from
;                                 ISDN and take all calls
;
PPP_MULTILINK = DYNAMIC
CHANNELS = 2
PPP_CALLBACK = TRUE

ISDN200.CFG Parameters

The parameters listed in the ISDN200.CFG file, along with the examples used throughout this manual, are outlined in Table B-1 below and explained in the text that follows.

Table B-1 : ISDN200.CFG Parameters

Section	Parameter	Example
Local Configuration	Name	NAME = MyHomeOffice
	Own MSN1	;OWN MSN = *
	Accepted MSN	ACCEPTED MSN = *
Connecting Router Configuration(s)	Name	NAME = HEADQUARTERS
	Password	PASSWORD = Secret
	Dialnumber	.914085553000
	Service	SERVICE = DATA64
	Inactivity Timeout	INACTIVITY TIMEOUT = 20
	IPX	;IPX = DISABLE
	IP	;IP = DISABLE
	MLB	MLB = DISABLE
	Indicated Dialnumber	INDICATED DIALNUMBER = IGNORE
	PPP Multilink	PPP_MULTILINK = DYNAMIC
	Channels	CHANNELS = 2
	PPP Callback	PPP_CALLBACK = TRUE

¹ MSN = multiple subscriber number

Local Configuration Parameters

• Name---This is the name of the local Cisco 200. In these examples, this is defined as "MyHomeOffice."
  

• Own MSN---This optional parameter is used for outgoing calls only on certain PABX systems. If you do not enter a number here, the part of the dialnumber after the last hyphen (which specifies your own dialnumber) is transferred as the calling party number during an outgoing call.
  

Some PABXs do not specify the entire dialnumber as their own calling party number during an outgoing call. Therefore, you can enter in this field the entire MSN to be transmitted or the entire dialnumber with terminal selection digit to be transmitted.

• Accepted MSN---This parameter is important in some PABXs for inbound calls. It controls which multiple dialnumbers on the S^₀ bus (Euro-ISDN) address the relevant ISDN Adapter. If you are using only one ISDN Adapter, do not change the default setting, which is an asterisk (*).
  

If * (asterisk) is entered in this field, the workstation reacts to all authorized inbound calls with the service identification data transfer rate (64 kbps).

If this field is empty, the workstation automatically uses the last block (after the hyphen) of its own dialnumber for the MSN comparison (Euro-ISDN).

When using the DSS1 Protocol, enter the MSN specific to your workstation's ISDN Adapter.

Connecting Router Configuration Parameters

• Name---This parameter specifies the name of the remote router; the name can consist of up to 12 characters. You can use any alphanumeric character and the underscore (_) character. Enter the same string in the square brackets above the Name parameter as that specified in the Name parameter.
  

• Password---This parameter specifies your CHAP password for authentication by the remote router.
  

• Dialnumber---This parameter specifies the dialnumber for the connecting router.
  

The dialnumber parameter contains (as a single string) all the numbers that must be dialed to form a connection to the connecting router. The dialnumber string should include, as applicable, the following codes or numbers:

• International access code
  

• Long-distance access code
  

• Public access code
  

• Signalling system 7 code
  

• Country code
  

• Area code
  

• Seven-digit telephone number (North America)
  

• Subscriber/extension number (Europe)
  

• Service---This parameter specifies the line speed for the connection to the remote router. Use a leading semicolon (;) to comment out the incorrect parameter (in our examples, DATA56 is commented out).
  

• Inactivity Timeout---This parameter controls the number of seconds that the Cisco 200 software will wait during periods of non-use before disconnecting the ISDN connection. This feature can be used to control costs.
  

---

Note If you do not set this parameter, if you assign it a value of 0, or if this parameter does not exist, ISDN connections will never be brought down and you might incur unnecessary costs whenever you use your Cisco 200 workstation.

---

When two stations with different values for this parameter are communicating, the smaller value is automatically used. If this parameter is enabled on only one station, the inactivity timeout is used according to the value set on that station. The default setting is 20.

• IPX---To enable IPX routing, use a leading semicolon (;) to comment out this line.
  

• IP---To enable IP routing, use a leading semicolon (;) to comment out this line.
  

• MLB---To enable MAC Layer Bridging, use a leading semicolon (;) to comment out this line.
  

• Indicated Dialnumber---Enter the dialnumber your remote router will be expecting if a call like the one defined below is received. You can specify several dialnumbers for the same remote router.
  

---

Note If this parameter is not specified, the ODI driver automatically determines the original address of the caller through its own dialnumber or that of the router. If the determined or specified number doesn't match the number given by the network, the incoming call will be rejected.

---

This parameter is used if the remote router's dialnumber to be called is different from the remote router number supplied by the network. It is also used when calls are received at different times from remote routers using different line numbers.

If you do not know which number the network will supply to your remote parameter, you can set this parameter to IGNORE. All incoming calls will be accepted, but the caller will be identified via a Welcome Packet exchanged between the workstation and the router at the beginning of every connection.

---

Note When you use IGNORE, you are overriding the security provisions of the ISDN network. In this case, anyone who knows the parameter file of your remote router can establish a connection with your workstation.

---

If you go through a passive connection establishment (reestablish after a transparent connection deestablishment from the router), you can use the utility provided to ask which number was indicated on the network side and enter it instead of IGNORE in your ISDN200.CFG file.

• PPP Multilink---This parameter specifies whether to use the second ISDN B channel dynamically or permanently.
  

If you use the second B channel dynamically, the Cisco 200 software automatically raises the second line when it detects that a large amount of data is being transferred, and lowers the line after traffic decreases. To use the second B channel dynamically, enter the following string in the ISDN200.CFG file:

PPP_MULTILINK=DYNAMIC

If you use both B channels all the time, you can improve your system's response time but potentially incur higher line costs. To use both B-channels all the time, enter the following string in the ISDN200.CFG file:

PPP_MULTILINK=STATIC

• Channels---This should be set to 2 if you are using PPP multilink or 1 if you are not using PPP multilink.
  

• PPP Callback---This parameter specifies that calls outgoing from the Cisco 200 will connect just long enough to request the router to call back. This allows the bulk of the connection costs to be billed to the connecting router and provides an extra layer of security because the connecting router will only dial a previously configured number to reach the authenticated user.
  

To enable PPP callback, enter the following string in the ISDN200.CFG file:

PPP_CALLBACK=TRUE

To disable PPP callback, enter the following string in the ISDN200.CFG file:

PPP_CALLBACK=FALSE

Alternately, to disable PPP callback, you may comment out the statement PPP_CALLBACK=TRUE in the ISDN200.CFG file using a semicolon, as in the following example:

;PPP_CALLBACK=TRUE

Modifying the NET.CFG File

The NET.CFG file contains information required to manage the protocols running over the ISDN connection. This file is automatically created when you install the Cisco 200 software.

You may need to modify the NET.CFG file after you initially install the Cisco 200 software. To modify the NET.CFG file, use any text editor or word processor that will allow you to save the file as DOS ASCII text.

Sample NET.CFG File

The following example illustrates a NET.CFG file for Cisco 200. This file, NETCFG.EXP, was copied to your Cisco 200 directory when you ran INSTALL.EXE. See Table B-2 for an explanation of the listed parameters.

; THIS IS AN EXAMPLE OF THE INFORMATION USED TO CREATE
; THE NET.CFG BY THE CISCO 200 PERSONAL OFFICE FOR ISDN 
; INSTALL PROGRAM 
;
spx connections = 50
show dots = on
file handles = 60
; Required when PBURST is in use
pb buffers = 4
; 
Link Support
    Max Stacks 8
    Max Boards 4
    Buffers 8 1600
    Mempool 4096
;
;Required when using NetWare VLMs
NetWare DOS Requester
    First Network Drive = F
    Netware Protocol = NDS BIND
; Required when PBURST is in use
    Pburst Write Window Size = 4
    Read Only Compatibility = ON
;
IPXODI 
    IPX Retry Count = 60
; 

; THIS IS AN EXAMPLE OF THE INFORMATION APPENDED TO
; ALL NET.CFG FILES BY THE CISCO 200 PERSONAL OFFICE
; FOR ISDN INSTALL PROGRAM
;
Link Driver CISCO200
     Frame ETHERNET_II 
; The following frame types are required 
; by MS-Windows for Workgroups v3.11
      Frame ETHERNET_802.2
      Frame ETHERNET_802.3
      Frame ETHERNET_SNAP
      Node Address 000455091234

NET.CFG Parameters

Table B-2 lists the parameters used for the Cisco 200 NET.CFG file and their use. For information on other parameters, see your network software manufacturer's documentation. See the sample NET.CFG File above for the correct format of each entry.

Table B-2 : NET.CFG Parameters

Parameter	Description
Link Driver CISCO200	This statement is required by your network software for the Cisco 200 driver. See your network documentation for more information.
Frame	To run the Cisco 200: The Ethernet II frame type must be the first Frame type. The Ethernet II frame type must be enabled (that is, there should not be a leading semicolon before it in the line in which it occurs).
Node Address	The node MAC address for your Cisco 200 workstation from the Software Installation Worksheet. This address must be unique. It is 12 characters long and can include a combination of numbers (1-9, 0) and letters (A-F).

When you have finished modifying the NET.CFG file, make sure you save the changes in DOS ASCII text format.

Changing Common Parameters

This section guides you through the process of modifying configuration parameters that might change. For example, you might be required to do one or more of the following tasks:

• Changing the Node MAC Address
  

• Changing the Connecting Router Telephone Number
  

• Adding a Connecting Router
  

• Changing the CHAP Password
  

• Enabling or Disabling a Protocol
  

• Enabling or Disabling PPP Multilink
  

• Enabling or Disabling PPP Callback