Black Box 5000 manual Multiserver Async Channel Characteristics, Sync Channel Characteristics

Multiserver 5000

Multiserver 5000 (continued)

Async Channel Characteristics

Capacity — up to 41

Speed — 50 to 38,400 bps

Configuration — DCE

ABR — to 19.2 Kbps

Parity — Odd, Even, Mark, Space, None

Stop Bits — 1, 1.5, 2

Characters — 5 to 8 bits/character plus parity (code levels 5 through 9)

Burst Rate — 422 Kbps (half-duplex over 56 Kbps composite)

Error Control — Full-duplex, automatic request for repetition (ARQ), with Cyclic Redundancy Check (CRC), and selective reject. Proprietary algorithm.

Classes — 64

Delay Characteristics — Average delay through the Multiserver is two character times, plus the transmission delay through the Multiserver system. Although transmission delay is normally very low, terminal users operating with an echoplex system will experience this delay twice; that is, once inbound to the computer and once on echo outbound to the terminal. This delay is not normally noticeable with speeds of 1200 bps and above, but may be noticeable with speeds of 300 bps or less.

Sync Channel Characteristics

Capacity — up to 10

Speed —
External clocking:	1.2 to 38.4 Kbps
Internal clocking:
DLC:	1.2 to 38.4 Kbps;
ASCII Bisync:	1.2 to 38.4 Kbps;
H-P Sync:	1.2 to 38.4 Kbps;
RTS/CTS:	1.2 to 38.4 Kbps;
Sync-Pad:	1.2 to 38.4 Kbps;
EBCDIC Bisync:	1.2 to 38.4 Kbps;
Micom DLC	1.2 to 19.2 Kbps;
Micom Voice:	9.6 to 14.4 Kbps;
Fast Packet:	1.2 to 56 Kbps;
TDM:	1.2 to 48 Kbps.
Configuration — DCE

Protocols — DLC, ASCII Bisync, EBCDIC Bisync, H- P Sync, RTS/CTS, Sync-Pad, MICOM DLC, MICOM Voice, Fast Packet, and TDM

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