Black Box PROTOCOL CONVERTER A/S-4 - Manual (Page 67)

PROTOCOL CONVERTER MODEL A/S-4
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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
——————- HOST MACRO ——————-
UNITSZ = 384 VTAM’S data buffer size
————— (LINE (GROUP) MACRO ————-
DIAL = NO No for leased line or yes for dial-up A/S-4 operation
LNCTL = SDLC For SDLC line
TYPE = NCP For NCP
(3) CLOCKING = EXT or INT Modem or A/S-4 supplies clocks
(2) DISCNT = NO or YES If switched SDLC line should drop if no active LU sessions
DUPLEX = FULL or HALF Full or half duplex line
INTRPI = 2
(*) NEWSYNC = NO No new sync on modem
(3) NRZI = YES or NO NRZI coding can be used
PAUSE = 2 Time between xmitting operation (poll) 200 ms
POLLED = YES Polled Line
REPLYTO = 1 Time between retries of operation (polls) if not answered 1
second, maybe 2 or 3
RETRIES = (1,2,5) Retry 1, wait 2 seconds, do it 5 times
SERVLIM = 4 Number of regular Scans of NCP order table before a special
scan (PU not responding to SNRM)
SPEED = 4800 Line Speed (300 to 19.2K baud)