REFERENCES
- Rowe (M). Coin and Fee Checking Relay Set. Document No. 10. Seminar on Microprocessors 16th‐20th April, 1979. Advance Level Telecommunication Training Centre. New Delhi.
- Loffreda (A). Updating Existing Exchanges by Use of Mini- microprocessor. Document No. 16. Seminar on SPC switching systems. 22nd-31st August 1977. Advance Level Telecommunication Training Centre, New Delhi.
- Meurling (J) and Eriksson (R). ARE—A Dual Purpose Switching System for New Installations and for Updating of Exchanges in Service. International Switching Symposium Sept. 1974.
- Sakal (M), Kono (M) and Yososhima (N). Fetex-4C0 Digital EPABX Series—its Flexibility and Expandability: Exposition Proceedings. INTELCOM—79.
- Pitroda (S G), Fechalos (W A) and Stehman (C J). The Microprocessor controlled 580 Digital Switching System. 213–4. International Switching Symposium. 1976.
- LE Pabic (J P), Cauhape (M) and Bonnet (G). Utilization of Microprocessors in the M.T. Time Division System. 31C4. International Switching Symposium 1979.
- Haugk (G) and Lang (J J). New Interfaces for Local Electronic Switching Systems. 31CI, International Switching Symposium, 1979.
- Schreiner, (S M), Van Goethem (J), and Henrion (M A). Use of Microprocessors in Large Digital Switching System. 31C3, International Switching Symposium 1979.