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Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide
Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide
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DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Screen reference 577 Data modules 17 Busy Out This option should be enabled for DTEs that are members of a hunt group and to allow “busy out” when DTE turns power off so that calls do not terminate on that DTE. SPEEDS Enter y to select operating speeds as follows: Permit Mismatch This option allows the EIA interface to operate at a rate different than that agreed to in the data module handshake. (The data module handshake is always the highest compatible rate as determined by the reported speed option of each data module.) Permit Mismatch eliminates the need to change the DTE/DLC speed every time a call is placed to/from an endpoint operating at a different speed. Valid entries Usage y/n Enter y to place the DLC port in a busied-out state once the DTE control lead to the DLC is dropped. Valid entries Usage Low Enter y to instruct the DLC to operate at a low speed from 0 to 1800 bits per second (bps). Enter n if the KYBD Dialing field is y. 300, 1200, 2400, 4800, 9600, or 19200Enter y beside the desired operating speed. Enter n if the speed is not desired. The DLC can be any one of these speeds. The speed is matched for the duration of the call, from call setup to call takedown. When multiple speeds are selected (select three or more, do not select just two speeds) and autoadjust is disabled, the DTE’s speed must be the highest selected speed. This is required because all feedback text is delivered to the DTE at the highest selected speed. AutoadjustAppears when the KYBD Dialing field is y. Enter y which tells the DLC port to automatically adjust to the operating speed and parity of the DTE it is connected to. Enter n if this option is not desired. Autoadjust can be selected with any of the speeds selected in the previous step. Autoadjust allows the DLC port to determine the speed and parity of the DTE and then match itself to this speed. Autoadjust only applies to calls originated by the user through Keyboard Dialing.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Screen reference 578 Data modules 17 When this option is enabled, the DLC reports the highest optioned speed and all the lower speeds (or the previously selected autoadjust speed) during the handshake process. !CAUTION: Caution must be used when using this option to send information from a DTE/DCE that is transmitting data at higher rates than that of the far end. Sustained usage of this type transmission results in loss of data. Whenever this option is enabled, the DTE must match the highest speed selected for the associated DLC port. This option is intended to be used by a DTE device operating locally at a higher baud rate than that of its far-end connection but transmitting relatively low amounts of data (for example, a user typing at a terminal). Also, this option may be selected whether Keyboard Dialing is selected. NOTE: The Low speed setting is not reported as an available speed when the Permit Mismatch field is y. Dial Echoing Appears when the KYBD Dialing field is y. Disconnect Sequence Appears when the KYBD Dialing field is y. Selects the sequence for a disconnect. Valid entries Usage y/n Enter y to instruct the DLC to operate at the highest selected speed, which is a higher rate than the far-end data module. Valid entries Usage y/n Enter y to echo characters back to the DTE. Dial echoing should be disabled when keyboard dialing is done by an intelligent device. Valid entries Usage long-break A long-break is greater than 2 seconds. two-breaksTwo-breaks is within 1 second.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Screen reference 579 Data modules 17 Answer Text Appears when the KYBD Dialing field is y. This option enables text feedback that is normally delivered to the DTE when a call is answered or disconnected. The Answer Text option applies to DLC-generated text as well as text received from the system. If this option is disabled, the system still generates the text, but the DLC prevents it from being sent to the device. This applies to the following messages: — INCOMING CALL — ANSWERED — DISCONNECTED — DISCONNECTED OTHER END This option usually is disabled when the answering DTE is a computer or an intelligent device. Parity Appears when the KYBD Dialing field is y. Select the desired type of parity. The DLC generates the parities when call setup text is sent to the DTE. The DLC does not check the parity when receiving dialing characters. Parity has nothing to do with the far end; it is used by the DLC to terminal communications during call setup. Set to match the connected DTE. Connected Indidation Appears when the KYBD Dialing field is y. This option generates a “CONNECTED” message to the DTE when the connection has been established. If the KYBD Dialing field is n, the connected indication is provided by the DLC activating its EIA 232C control lead. Valid entries Usage y/n Enter y to allow text messages to be delivered to the DTE when a call is being answered. Valid entries Usage even odd mark space Valid entries Usage y/n Enter y to select this option.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Screen reference 580 Data modules 17 DLC Option Settings The following provides additional information on the option settings for DLCs when used with the following types of devices: nPrinters nNon-intelligent terminals nData terminals and personal computers nHost computers nInformation Systems Network (ISN) Printers A DLC port with a companion ADU, when attached to a printer, usually terminates a data call. Therefore, in this connection, the printer is the endpoint device. The originating device may be attached to a DCP mode 2 data module (such as the MPDM) or the DLC. A Z3A ADU extends the range of the EIA 232C connection. When a receive-only printer (or any printer that does not generate the Transmit Data and DTR leads) is used, the ADU must be powered from a small plug-mounted transformer (2012D, or equivalent) connected to pins 7 and 8 of the modular jack. (Refer to ADU User Manual for details.) An ADU cannot be used if the printer has hardware flow control using the Clear To Send (CTS) lead. An ADU can be used, however, if the printer is using software flow control. A printer connected to a DLC is usually assigned as a line. Ta b l e 7 lists the option settings for printer connections.
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Screen reference 581 Data modules 17 Non-intelligent terminals A non-intelligent terminal connected to the DLC usually is assigned as a line. Ta b l e 8 lists the option settings for non-intelligent terminals. Table 7. DLDM screen settings for printer connection Field on screen Option Comments Speed Highest speed at which the Printer operatesSubject to distance limitations; Autoadjust not used KYBD Dialing no Busy Out yes If printer is member of Hunt Group Permit Mismatch yes No, if printer is low speed Parity -Don’t care Dial Echoing - Don’t care Disconnect Sequence- Don’t care Answer Text - Don’t care Connected Indication - Don’t care Configuration no Table 8. DLDM screen settings for connection to non-intelligent terminals Field On screen Option Comments Speed All speeds at which the terminal can operate; autoadjust Subject to distance limitations; Autoadjust when the KYBD Dialing field is y and the Terminal can generate an ASCII “return” KYBD Dialing yes Busy Out no Yes, if terminal is member of a hunt group Permit Mismatch yes - Continued on next page
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Screen reference 582 Data modules 17 Data terminals and personal computers An intelligent data terminal or a personal computer (PC) attached to a DLC can either originate or terminate a data call. A single ADU at the site of the originating device extends the distance signals can travel to the switch (the model ADU depends on the terminal connector). An analog telephone can be attached to this arrangement whenever an ADU uses the standard building wiring. Ta b l e 9 lists the option settings used for data terminal and personal computer connections.Parity Same as DTE Dial Echoing yes Only if the KYBD Dialing field is y Disconnect Sequence2 Depends on terminal Answer Text yes Connected Indication -Don’t care Configuration yes Table 9. DLDM screen settings for connection to data terminal or personal computer Field on screen Option Comments Speed All speeds at which the Data Terminal or PC can operateSubject to distance limitations; Autoadjust not used KYBD Dialing yes Busy Out no Yes, if device is accessed through a hunt group Permit Mismatch yes No, if device does not support XON/XOFF flow control Parity Same as DTE Continued on next page Table 8. DLDM screen settings for connection to non-intelligent terminals Field On screen Option Comments Continued on next page
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Screen reference 583 Data modules 17 Host computers A host computer may originate and terminate a data call. For this application, the number of DLCs required depends on the number of ports needed. An MADU can be used (instead of 8 ADUs) to complete the connection. Ta b l e 1 0 lists option settings for a port that has a terminating connection to a host computer or an originating connection from a host computer. NOTE: If the KYBD Dialing field is n, the rest of the option settings are irrelevant. Dial Echoing no These devices can dial in the ASCII stream without human intervention Disconnect SequenceLong - Answer Text no These devices may not want to see any text Connected Indication -Don’t care Configuration yes Table 9. DLDM screen settings for connection to data terminal or personal computer Field on screen Option Comments Continued on next page
DEFINITY ECS Release 8.2
Administrator’s Guide 555-233-506 Issue 1
April 2000
Screen reference
584 Data modules
17
Screen 67. X.25 Adjunct Data Module Table 10. DLDM screen settings for terminating connection to host
computer
Field on screen Option Comments
Speed All speeds at which
the computer can
operate Subject to distance limitations;
Autoadjust not used
KYBD Dialing no
Busy Out -Don’t care
Permit Mismatch - Don’t care
Parity - Don’t care
Dial Echoing - Don’t care
Disconnect
Sequence- Don’t care
Answer Text - Don’t care
Connected
Indication - Don’t care
Configuration - Don’t care
change data-module 30 DATA MODULE Page 2 of 2
LAYER 2 PARAMETERS
Number of Outstanding Frames (w): 4
Retry Attempt Counter (N2): 2
Frame Size (N1): 135
Retransmission (T1) Timer (1/10 seconds): 10
Idle (T4) Timer (1/10 seconds): 30
LAYER 3 PARAMETERS
Number of Outstanding Packets: 2
Restart (T20) Timer (seconds): 8
Reset (T22) Timer (seconds): 10
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Screen reference 585 Data modules 17 Number of Outstanding Frames (w) Specifies layer 2 window size. Retry Attempt Counter (N2) Specifies the number of times to send one frame when this frame is not confirmed for a period of time. Frame Size (N1) Specifies the number of bytes in a frame. Retransmission (T1) Timer (1/10 seconds) The T1 timer is started at the beginning or the end of the transmission of a frame. At the end of this timer, retransmission of a frame is initiated according to the procedures for link set-up and disconnection or information transfer. Idle (T4) Timer (1/10 seconds) The T4 timer is a system parameter that represents the time a DTE allows without frames being exchanged on the data link. Number of Outstanding Packets Specifies the number of packets that can be sent without confirmation. Valid entries Usage 1 - 7 If you enter 2, up to 2 frames can be sent without confirmation. Valid entries Usage 0 - 7 Valid entries Usage 135 263 If the value is 135, there can be up to 1080 bits within a frame. This value is suitable for all adjuncts and for DCS. Valid entries Usage 0 - 250 Valid entries Usage 0 - 250 Valid entries Usage 2 - 7
DEFINITY ECS Release 8.2
Administrator’s Guide 555-233-506 Issue 1
April 2000
Screen reference
586 Data modules
17
Restart (T20) Timer (seconds)
The T20 timer is a DTE time-limit started when DTE issues a restart indication
and terminated when the restart request is received or confirmed.
Reset (T22) Timer (seconds)
The T22 timer is a DTE time-limit started when DTE issues a reset indication and
terminated when the reset request is received or confirmed.
Screen 15-1. 7500 and World Class BRI Data Module
XID
(Exchange identification) Used with 7500 and World Class BRI Data Modules.
Used to identify layer 2 XID testing capability.
Fixed TEI
Used with 7500 and World Class BRI Data Modules. Used to indicate whether the
endpoint has Fixed Terminal Equipment Identifier (TEI) capability. TEI identifies
a unique access point within a service. For Fixed TEI stations, the TEI must be
administered. Terminals with automatic TEI capability, the associated TEI is
assigned by the system.
Valid entries Usage
0 - 500
Valid entries Usage
0 - 500
Valid entries Usage
y/n
Lucent recommends setting to n.
Valid entries Usage
y/n
Enter y to indicate the endpoint has Fixed Terminal Equipment
Identifier (TEI) capability.
change data-module 30 Page 2 of 2
DATA MODULE
BRI LINK/MAINTENANCE PARAMETERS
XID? y Fixed TEI? n TEI: ___
MIM Support? y Endpt Init? y SPID: 300_____ MIM Mtce/Mgt? y