共 50 条
- [21] SMALL KEY TELEPHONE SYSTEM FOR RESIDENTIAL USE JAPAN TELECOMMUNICATIONS REVIEW, 1978, 20 (02): : 104 - 106
- [24] SIP based VoIP System for E911 Service 2006 THE JOINT INTERNATIONAL CONFERENCE ON OPTICAL INTERNET (COIN) AND NEXT GENERATION NETWORK (NGNCON), 2006, : 363 - 365
- [25] Design of Mongolian Telephone Voice Service System 2012 2ND INTERNATIONAL CONFERENCE ON APPLIED ROBOTICS FOR THE POWER INDUSTRY (CARPI), 2012, : 916 - 918
- [26] DIGITAL KEY TELEPHONE SYSTEM WITH COMPLEX COMMUNICATION FUNCTIONS REVIEW OF THE ELECTRICAL COMMUNICATIONS LABORATORIES, 1982, 30 (04): : 704 - 711
- [27] THE SIEMENS 40 80 KEY HYBRID TELEPHONE SYSTEM COMMUNICATIONS PRODUCT REPORTS, 1989, 6 (10): : 18 - 23
- [29] THE COMDIAL EXECUTECH XE/XL KEY TELEPHONE SYSTEM COMMUNICATIONS PRODUCT REPORTS, 1989, 6 (11): : 21 - 23
- [30] ELECTRONIC KEY TELEPHONE SYSTEM FOR OFFICE AND HOME. NEC Research and Development, 1984, (73): : 53 - 57