Journal Call no. | QA75.5.H66 |
---|---|
Author | Campbell, Everard. |
Article Title | New tone to herald duplex ringing / Everard Campbell. |
Is Part Of | Hong Kong computer journal ; v.6, no.11, Nov 1990, p.17-18, illus. |
Abstract | Telecommunications. |
Journal Call no. | QA75.5.H66 |
---|---|
Author | Campbell, Everard. |
Article Title | New tone to herald duplex ringing / Everard Campbell. |
Is Part Of | Hong Kong computer journal ; v.6, no.11, Nov 1990, p.17-18, illus. |
Abstract | Telecommunications. |