NIO CommKit Host Interface Installation and System Administration Manual

3-6
Control Tables (from AT&T 255-110-127)
Data Switch Dialstrings
name for the host as defined in the data switch control computer database. This
location information is used to route the call through the data switch network to
the desired host.
• The next fields in the User-dialstring are optional to the data switch. Translation
of these field values is positional and dependent on the program processing the
incoming call message, such as the CommKit Host Interface server dkserver.
The incoming dialstring is translated on the remote host using the srvtab table.
• The service field contains the actual CommKit Host Interface service desired.
This field is mapped into the service field in the srvtab table on the remote host.
• The protocol field contains optional protocol specifications. The values for the
protocol field of the dialstring map into the flags field in the srvtab. These pro-
tocol values can be grouped logically as follows:
- Protocol values indicating the type of service (that is, raw, terminal, and
remote execution services, etc.) are to be used on the remote host
- Protocol values applicable to use on the remote execution driver
- Protocol values applicable to use for the terminal driver
- Other flags.
These protocol field specifications are optional and, if not specified by the
user, can be supplied by the calling program on the local host or mapped
from the entry in the srvtab on the receiving host.
• The parameter field contains an optional parameter field interpreted by the pro-
gram that processes incoming service requests such as dkserver.
Examples
If a user with a login of goldfish having a numerical user ID of 104 is logged
on to the host fish and wants to remotely log on to the host hpams5x, the fol-
lowing command would be executed on fish:
dk nj/shore/hpams5x
The dk program calls maphost to add the service and protocol field specifi-
cations to the outgoing dialstring. The dialstring now becomes:
nj/shore/hpams5x.rl.vx
• nj/shore/hpams5x is the location or area/exchange/host information
• rl is the service name for remote login [see srvtab(4)]