System/Line Gen For Batch - Black Box PC001 User Manual

PROTOCOL CONVERTER MODEL A/S-4

12. System/Line Gen for Batch

The following is a VTAM/NCP/JES2 line gen for a 3776 model 3 or 4. For more information on specific
parameters, refer to the appropriate IBM manuals.
IBM 3770 SNA Installation Guide - GC30-3064
Component Description for the IBM 3776 and 3777 Communication
Terminals - GA27-3145
VTAM Generation Manuals - MANY
NCP Generation Manuals - MANY
NCP & VTAM Parameters: Most values are defaults
UNITSZ = 384
DIAL = NO
LNCTL = SDLC
TYPE = NCP
(3) CLOCKING = EXT or INT
(2) DISCNT = NO or YES
DUPLEX = FULL or HALF
INTRPI = 2
(*) NEWSYNC = NO
(3) NRZI = YES or NO
PAUSE = 2
POLLED = YES
REPLYTO = 1
RETRIES = (1,2,5)
SERVLIM = 4
SPEED = 4800
66
——————- HOST MACRO ——————-
VTAM'S data buffer size
————— (LINE (GROUP) MACRO ————-
No for leased line or yes for dial-up A/S-4 operation
For SDLC line
For NCP
Modem or A/S-4 supplies clocks
If switched SDLC line should drop if no active LU sessions
Full or half duplex line
No new sync on modem
NRZI coding can be used
Time between xmitting operation (poll) 200 ms
Polled Line
Time between retries of operation (polls) if not answered 1
second, maybe 2 or 3
Retry 1, wait 2 seconds, do it 5 times
Number of regular Scans of NCP order table before a special
scan (PU not responding to SNRM)
Line Speed (300 to 19.2K baud)