MIL-HDBK-1191
2. When this office shares a line with a secretary or key associate, both
lines indicated will be provided.
3. When this office has several subscribers stations (desks), both lines
indicated will be provided.
4.
Full operators console features and trunk access links will be provided.
5. This office must obtain telephone service from the local telephone
company.
6. The type of instruments furnished will depend on the equipment and
furnishings provided. They will be served by commercial lines.
7.
Provide telephone outlet only, telephone sets will not be furnished.
8.
Incoming calls will ring at the control desk. A visual indicator
(flashing light) will be provided at a conspicuous location to signal an
incoming call.
9.
Attendant consoles will be provided for appointment clerks
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