HP 3000 Manuals HP 3000 Manuals
Differences Between DS/3000 and NS3000/XL
DS is an acronym for Distributed Systems. NS is an acronym for Network
Services. An NS3000/XL link product is required in addition to the
NS3000/XL Network Services. A DS installation can consist of 1)
hardwired point-to-point links, 2) point-to-point modem links on either
dial-up or leased telephone lines, 3) X.25 network links, and 4)
satellite network links. The maximum data rate over a DS link is 56
kilobits per second.
An NS installation, on the other hand, may be an internetwork consisting
of a LAN with a 10 megabit-per-second signalling rate connected to other
LANs by way of a wide-area, point-to-point network link. NS3000/XL
cannot directly access a DS link. However, an NS3000/V node can be used
as an intermediary to connect from an NS3000/XL node to a DS link.
New Features
NS3000/XL provides the user and programmer with many features that are
not available in DS/3000. These new features are summarized here:
* Direct access to any node on the network or internetwork.
* Direct access to remote files, devices, or databases.
* Configurable remote prompts.
* Redirection of node names coded into programs or job streams.
* Programmatic access of remote terminals by using Reverse VT.
* Network File Transfers (NFT) from any node on the network or
internetwork to any other node on the network or internetwork.
* Temporary remote logons for NFT transfers.
* DSCOPY options to move, replace, or overwrite files and to copy
privileged files.
* New and existing (DS) syntax is supported.
Missing Features
This list specifies the features that were available in DS/3000 but are
not available in NS3000/XL:
* The following DSLINE parameters are ignored:LINEBUF= EXCLUSIVE,
PHNUM=, LOCID=, REMID=, SELECT=, FROMADDR, FROMADR=, TOADDR=, TOADR=,
QUEUE, NOQUEUE.
* 3000 to 1000 or DEXEC calls are not supported.
* Program-to-Program communication (PTOP) is not available. To
translate your PTOP applications to NetIPC and RPM, please refer to
the NetIPC 3000/XL Programmer's Reference Manual.
Changed Features
The features that changed from DS3000 to NS3000/XL are as follows:
* DSLINE ldev# (for DS device) is replaced by DSLINE envID or
DSLINE envnum.
* Some DSERR error codes changed.
* Remote Process Management is available on NS3000/XL.