1 01/24/84  MCS communication channel names
 2 
 3 The name used to designate an MCS communications channel is a
 4 character string of up to 32 characters.  The name is composed of
 5 components separated by periods, where each component represents a
 6 level of multiplexing.  the first two components identify the physical
 7 channel on an FNP; further components (if present) identify the
 8 subchannels of a concentrator (such as a VIP 7700 controller).
 9 
10 
11 Format of physical channel name:
12 The physical channel name (which corresponds to the old-style
13 name of the from ttyXXX) has the following format:
14 
15    F.ANSS
16 
17 where--
18    F   is an FNP identifier (a, b, c, or d);
19    A   is an adapter type (h for an HSLA channel, l for an LSLA
20        channel);
21    N   is the number of the particular adapter
22        (0-2 for an HSLA, 0-5 for an LSLA);
23    SS  is the decimal number of the subchannel on the specified
24        adapter.
25 
26 
27 Examples:
28           Name      Description                   Old form
29 
30           a.l000    FNP a, LSLA 0, subchannel 0   tty000
31           a.h108    FNP a, HSLA 1, subchannel 8   tty708
32           b.h016    FNP b, HSLA 0, subchannel 16  ttyG16
33 
34 
35 Notes on multiplexed channels:
36 The format of the additional components of the names of subchannels of
37 a concentrator or "multiplexer" depends on the particular multiplexer;
38 it may be a station id, or a sequential number, etc.  For example:
39 
40           Name      Description
41 
42           b.h016.01 FNP b, HSLA 0, subchannel 16,
43                     concentrator subchannel 1
44 
45           b.h016.09 same physical channel, concentrator
46                     subchannel 9
47 
48 
49 Notes on ARPANET channels:
50 The names of ARPANET channels are of the form netXXX for user_telnet
51 channels or ftpXXX for file-transfer channels, where XXX is an
52 arbitrary 3-digit number.