Lucent Technologies 5ESS-2000, Инструкции по эксплуатации и техническому обслуживанию

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The office will receive data from SCANS for up to 24 hours after it is primed unless the data session is manually
terminated using the
IN:REMOTE:STOP; message. If the SCANS does not begin to send data within the 24-hour
period, the data session times out and an IN REMOTE ERROR message is displayed at the SCCS (or MCC). After
a time-out, the office will need to be primed again.
After priming, a delivery request is made to SCANS for the binary data packages. This request, which is usually
made from a dial-up terminal between SCANS and the SCC, issues a binary overwrite (BOW) command to SCANS.
The BOW command includes the 5ESS-2000 switch office name, the identification of the software updates, and a
transaction ID.
As soon as a port is available, SCANS sets up a 4-wire dial-up link to the target office. This link is used for delivery
of the binary data packages. Assuming no equipment failures or unusually high demand, SCANS will establish this
link within 24 hours of the delivery request.
Using the access login and the transaction ID, SCANS accesses the Lucent Technologies 3B20 computer. The
SCANS then establishes a 4800-b/s BX.25 data link to the target office. The binary update files, along with the
header and message files, are then transmitted to the target office to be placed on disk in the software update
directory (/etc/bwm) of a storage partition.
Upon successful reception of the binary overwrite files, the IN REMOTE STOPPED message is dumped at the
SCCS work station and/or MCC video terminal to indicate that the binary files have been received and loaded into
/etc/bwm.
Assuming that the binary update files have been received and verified, the BX.25 data link is automatically
terminated.
The software updates received from SCANS are the same software updates generated at the PSS. The SCANS
does not alter the internal structure or format of any software update. The SCANS information file is not required by
the program update subsystem. If this file is sent along with the BOW, it is ignored.
5.3.4.2 Reception from CSCANS
To receive software updates from CSCANS, a dial-up link must first be established with CSCANS. When the dial-up
link is completed, the proper login and passwords must be used to gain access to the CSCANS data base, for those
offices that are so equipped. For subscribing offices, follow local CSCANS procedures for accessing the CSCANS
data base and requesting applicable software updates.
The office storage space required for each software update binary data package is provided in the software change
size section of the software. Prior to data transmission, it must be determined that sufficient file space is available in
the directory on disk where the software updates are to be stored. If the file space is insufficient, memory audit and
space reclamation techniques are used to create space, or the software updates are requested in stages (one or
two at a time) as space allows. When enough file space is available, the office is primed for binary data package
delivery by using the
UPD:INITPW:PASSWD="xxxxxx",KEY="yy";
message. In priming, a password and key must
be selected through use of the UPD:INITPW message, and the identical password and key must be set in the
CSCANS data base. This password provides additional security at the application level in the file transfer process.
The office will receive data from CSCANS at any time after it is primed and the CSCANS data base is updated. Note
that the office will normally not need to be primed again. The office may be primed again, if desired for security or
other reasons, through use of the
UPD:INITPW:PASSWD="xxxxxx",KEY="yy";
message. It is important to note
that the CSCANS data base must also be updated accordingly with the newly chosen password and key.
After priming, a delivery request is made to CSCANS for the binary data packages. Follow local CSCANS
procedures for requesting a binary data package. Upon successful reception of the binary overwrite files, a
UPD:CSCANS message is dumped at the SCCS work station and/or MCC video terminal to indicate that the binary
files have been received and loaded into /etc/bwm.
235-105-210 October 1999
Copyright © 1999 Page 6