1 The name used to designate an MCS communications channel
 2 is a character string of up to 32 characters. The name is
 3 composed of components separated by periods, where each component
 4 represents a level of multiplexing. the first two components identify
 5 the physical channel on an FNP; further components (if present)
 6 identify the subchannels of a concentrator (such as a VIP 7700 controller).
 7 
 8 
 9 Format of physical channel name:
10 The physical channel name (which corresponds to the old-style
11 name of the from ttyXXX) has the following format:
12 
13           F.ANSS
14 
15 where:
16      F              is an FNP identifier (a, b, c, or d)
17 
18      A              is an adapter type (h for an HSLA channel,
19                     l for an LSLA channel)
20 
21      N              is the number of the particular adapter
22                     (0-2 for an HSLA, 0-5 for an LSLA)
23 
24      SS             is the decimal number of the subchannel on the
25                     specified adapter.
26 
27 
28 Examples:
29           Name      Description                   Old form
30 
31           a.l000    FNP a, LSLA 0, subchannel 0   tty000
32           a.h108    FNP a, HSLA 1, subchannel 8   tty708
33           b.h016    FNP b, HSLA 0, subchannel 16  ttyG16
34 
35 
36 Multiplexed channels:
37 The format of the additional components of the names
38 of subchannels of a concentrator or "multiplexer" depends on
39 the particular multiplexer; it may be a station
40 id, or a sequential number, etc.
41 For example:
42           Name      Description
43 
44           b.h016.01 FNP b, HSLA 0, subchannel 16,
45                     concentrator subchannel 1
46 
47           b.h016.09 same physical channel, concentrator
48                     subchannel 9
49 
50 
51 ARPANET channels:
52 The names of ARPANET channels are of the form netXXX for user_telnet
53 channels or ftpXXX for file-transfer channels, where XXX is an arbitrary
54 3-digit number.