NEC Mcs Host Interface Link Hl7 Installation And Configuration Guide

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MCS Host Interface Link HL7 INTERFACE
Figure 1-5   Link Type Selection Menu
5.  The currently loaded Link Type value  indicates the Link
Type presently used by the MCS HL7 interface application.
A ‘none’ indicates the Link Type has not yet been config-
ured. Select the ‘1’ or ‘A’ for an Asynchronous Serial Link,
or select ‘2’ or ‘T’ for a TCP/IP link, followed by .
The MCS Host Link/LLP Shared Library Installation menu
screen is displayed (Figure 1-3).
6.  If the currently selected LLP / Link Type shown in the upper
right portion of the display is correct, select ‘3’ or ‘S’ to
load the shared libraries for use with the MCS HL7 interface
application. The Shared Library Load screen is displayed
(Figure 1-6), showing the configuration chosen, with a
prompt to load the libraries. 
NEC America Inc      MCS Host Link Administration Menu     Tue - Jan 27, 1998
Link Type Shared Library Selection
  Currently Loaded Link Type: none
  Available Link Type Selections -
    Link Type   Definition
  1)   A
SL    - Asynchronous Serial Link
  2)   TCP    - TCP/IP Link
  9) Return
Enter Selection: [ ] 
						

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HL7 INTERFACE MCS Host Interface Link
Figure 1-6   Shared Library Load Menu
Note:
If the MCS HL7 interface application is currently running, the shared libraries 
cannot be loaded. If this is the case, the user is notified and prompted to tempo-
rarily halt the interface while the shared libraries are loaded.
When complete, the MCS Host Link/LLP Shared Library Installation menu 
screen is displayed (Figure 1-3). Select ‘9’ or ‘R’ to return to the MCS Host In-
terface Configuration screen (Figure 1-2).
Link Specific 
Parameters 
ConfigurationThis menu gives the user different configuration options based on which Link Type 
was chosen in Section 1.3.1, 
Shared Library Configuration (LLP and Link Type), 
step 5.
For TCP/IP Link Type:
1. Select ‘2’ or ‘L’ to access the MCS Link Specific Parame-
ters Configuration display (Figure 1-7
).
2. Enter ‘C’ or ‘S’, followed by , to indicate whether the
MCS HL7 interface acts as client or server, respectively, in
the client/server model for TCP/IP.  In “Server” mode, the
applications “listens” for a connection from a client before
communications can begin.  In “Client” mode, the 
NEC America Inc      MCS Host Link Administration Menu     Tue - Jan 27, 1998
Shared Library Load
          Current Shared Libraries Selected -
          Low Level Protocol: llp2
          Link Type:          tcp
          Load Shared Libraries? (Y/N)
: [ ] 
						

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MCS Host Interface Link HL7 INTERFACE
Link Specific 
Parameters 
Configuration 
(Cont)application makes repeated attempts to connect to the server
application, and then communications can begin.  The cur-
rently selected, or default value, is displayed in parenthesis.
Figure 1-7   TCP/IP Link Specific Parameters
3.  Enter the server host name, followed by .  For default
when “S” or “Server” is selected, the UAP’s host name is
shown.  However, the value entered must match the host
name as defined in the /etc/hosts file corresponding to the IP
address used for the HL7 link.  If the link type is “C”, the
server host name is the name of the Hospital Information
System (HIS) machine to which connect requests are being
made. 
4. Enter the server TCP/IP port number, followed by .
When complete with this step enter  again to return
back to the MCS Host Interface Configuration screen (Fi g -
ure 1-2). For an Asynchronous Serial Link Type:
5. Select ‘2’ or ‘L’ to access the MCS Link Specific Parame-
ters Configuration display (Figure 1-8).
NEC America Inc      MCS Host Link Administration Menu     Wed - Feb 04, 1998
                MCS Link Specific Parameters Configuration
               Currently Link Type: tcp
Enter (Client) or (Server) link type (S):
Enter Server host name (uap2000):
Enter Server port number (2020):
Update Completed
    NOTE: Server host name - enter the host name defined in
          the /etc/hosts file for the HL7 Host Link.
Press Return to continue. 
						

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HL7 INTERFACE MCS Host Interface Link
Link Specific 
Parameters 
Configuration 
(Cont)6.  Enter the serial device for receiving HL7 messages, fol-
lowed by .
7.  Enter the serial device for transmitting messages (HL7 mes-
sages and LLP acknowledgments), followed by . 
Figure 1-8   Asynchronous Serial Link Specific Parameters 
8.  Enter the appropriate number indicating the line mode for
the link, followed by . Each line mode displayed indi-
cates baud rate, number of bits, parity type, and number of
stop bits. When complete with this step enter  again to
return back to the MCS Host Interface Configuration screen
(Figure 1-2).
Miscellaneous 
Configurations 
(Timers, Counters, 
Etc.)
Figure 1-9 shows the Miscellaneous Configurations menu, which gives 
miscellaneous options for configuration. These parameters have default values 
displayed in parenthesis next to each prompt. The default values are the 
recommended values. Modifications to these values should be coordinated with the 
system administrator. 
NEC America Inc      MCS Host Link Administration Menu     Tue - Jan 27, 1998
                MCS Link Specific Parameters Configuration
               Currently Link Type: asl
Enter receive TTY port device, “-” to clear (/dev/ttyi1d):
Enter transmit TTY port device, “-” to clear (/dev/ttyi1d):
              Line Mode and Speed
     1) 9600B,  8-N-1       5) 9600B,  7-E-1
     2) 4800B,  8-N-1       6) 4800B,  7-E-1
     3) 2400B,  8-N-1       7) 2400B,  7-E-1
     4) 1200B,  8-N-1       8) 1200B,  7-E-1
Enter line mode (1):
Update Completed
Press Return to continue. 
						

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MCS Host Interface Link HL7 INTERFACE
 
Figure 1-9   Miscellaneous Configurations
1. Select ‘3’ or ‘M’ to access the MCS Host Link Miscellaneous
Configuration display (Figure 1-9
).
2. Enter a time-out value (in seconds) for waiting on a complete
message reception, followed by . If a message recep-
tion has begun, and the complete message has not been
received by this configured time, the message reception is
aborted.
3.  If the Link Type chosen is TCP/IP, enter the retry timer
value, followed by . This value defines the time inter-
val used to retry a ‘connect’ to the server when the link goes
down.
4.  Enter the logging level for the MCS HL7 interface applica-
tion, followed by .
5.  Enter the shared memory key value, followed by . The
shared memory here is used to share information for collect-
ing statistical data about message reception and message
processing.
6.  Enter the maximum number of negative acknowledgments
(NAK) for a single message before terminating the link, fol-
lowed by .
NEC America Inc      MCS Host Link Administration Menu     Tue - Jan 27, 1998
               MCS Host Link Miscellaneous Configuration
Enter the new configuration value or just
press Return to accept the current value.
Enter message reception timer value (5 sec):
Enter network (TCP/IP) link connection retry timer value (15 sec):
Enter logging level (9 level):
Enter host link shared memory key value (2734):
Enter number of times to send a negative acknowledgment (3):
Enter host interface working directory (/oai/app/mcs/host/bin):
Enter logging and statistics directory (/oai/app/mcs/host/log):
Enter modem dial out telephone number ():
Update Completed
Press Return to continue. 
						

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Configurations 
(Timers, Counters, 
Etc.) (Cont)7.  Enter the directory path for the current working directory,
followed by .
8.  Enter the directory path which contains the logging file, fol-
lowed by .
9.  If the Link Type chosen is Asynchronous Serial, and if a
modem is being used, enter the dial out number, followed by
. When complete with this step enter  again to
return back to the MCS Host Interface Configuration screen
(Figure 1-2).
HL7 
Configurations 
(User Definable)Some of the fields defined by the HL7 Standard are allowed to have site-
specific values. The values for these ‘user-defined’ fields are configurable
using the HL7 Configurations menu. Only those fields applicable to the
MCS HL7 interface are available for configuration. The values entered here
are compared against incoming HL7 messages. If a match occurs, process-
ing is performed accordingly.
1.  Select ‘1’ or “A” to assign the Receiving Application name
for HL7 messages (Figure 1-10). 
Figure 1-10   HL7 User-Definable Configuration
NEC America Inc      MCS Host Link Administration Menu     Tue - Jan 27, 1998
            MCS HL7 Configuration
        Options
        1) Receiving A
pplication Assignment
        2) Sending Application Assignments
        3) Other Miscellaneous Configurations
        9) Return
        Enter Option: [ ] 
						

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MCS Host Interface Link HL7 INTERFACE
HL7 
Configurations 
(User Definable)2.  Enter the value when prompted (Figure 1-11).   If an HL7
message is received with no value entered in MSH-5
(receiving application), this value is used in the MSH-3,
Sending Application, field in all HL7 acknowledgments.
After entering the data, the HL7 User-Definable Configura-
tion screen is displayed (Figure 1-10). 
Figure 1-11   HL7 Receiving Application Configuration
3. Select ‘2’ or ‘S’ to enter the Sending Application names
allowable for this interface (Figure 1-12).  Only HL7 mes-
sages with these Sending Application names (MSH-3) are
processed.  Entering ‘-’ allows all messages to be processed.
After entering the data, the HL7 User-Definable Configura-
tion screen is displayed (Figure 1-10)   
NEC America Inc      MCS Host Link Administration Menu     Tue - Jan 27, 1998
        Receiving Application Configuration
The Receiving Appl Name: Sets MSH-3 (Sending Appl Name) to this
for all Application Acknowledgments.
Enter the new configuration value or just
press Return to accept the current value.
Receiving Application Name (necuap): 
						

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Figure 1-12   HL7 Sending Application Configuration 
HL7 
Configurations 
(User Definable) 
(Cont)4. Select ‘3’ or ‘O’ to access the MCS HL7 Miscellaneous
Configuration display (Figure 1-13).   
HL7 Miscellaneous Configurations
NEC America Inc      MCS Host Link Administration Menu     Tue - Jan 27, 1998
          Sending Application Configuration
The Sending Appl Names: Filter list for received messages (MSH-3)
(“-” indicates all names are acceptable.
Current Settings:
  Sending Appl Names (MSH-3)
  --------------------------
  -
     A
dd, Delete, Save or Quit (A, D, S, Q)? 
						

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Figure 1-13   HL7 Sending Application Configuration
HL7 
Configurations 
(User Definable) 
(Cont)5.  Enter the value used to indicate ‘death’ in the Discharge
Disposition field (message segment PV1, sequence 36). 
6.  For the same field, enter the value to indicate ‘other’ cause
for discharge.
7.  Enter the value used to indicate a confidential patient with
visitors allowed, as defined in the VIP Indicator field
(message segment PV1, sequence 16).
8.  For the same field, enter the value to indicate a confidential
patient with no visitors allowed.
9.  For the same field, enter the value to indicate a non-confi-
dential with visitors allowed.
10. For the same field, enter the valued to indicate a non-confi-
dential patient, but with no visitors allowed. When complete
with this step enter  again to return back to the MCS
Host Interface Configuration screen (Figure 1-2).
11. Enter ‘N’ or ‘D’ to indicate whether a new or duplicated
Message Control ID (MSH-10) is sent in HL7 acknowledg-
ments.  If ‘D’ is chosen, the Message Control ID of the
received message (MSH-10) is used.
NEC America Inc      MCS Host Link Administration Menu     Tue - Jan 27, 1998
        MCS HL7 Miscellaneous Configuration
Enter the new configuration value or just
press Return to accept the current value.
Death Indicator:
 Enter HL7 Message Segment Containing Death Indicator (PV1):
Discharge Disposition (PV1, Seq 36):
 Enter Death Indicator String (Y):
VIP Indicator (PV1, Seq 16):
 Enter Confidential w/ Visitors Allowed Indicator (Y):
 Enter Confidential w/o Visitors Allowed Indicator (Y):
 Enter Visitors Allowed Indicator (N):
 Enter No Visitors Allowed Indicator (N):
HL7 Application ACK Message Control ID:
 Generate New ID [N] or Duplicated Received ID [D] (D): 
						

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