共 50 条
- [44] ELECTRONIC KEY TELEPHONE SYSTEM FOR SMALL OR MEDIUM OFFICES. Reports of the Electrical Communication Laboratory, 1983, 31 (04): : 516 - 523
- [45] DIGITAL KEY TELEPHONE SYSTEM WITH COMPLEX COMMUNICATION FUNCTIONS. Reports of the Electrical Communication Laboratory, 1982, 30 (04): : 704 - 711
- [46] A framework for 911 service in a PBX LAN 2002 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5, CONFERENCE PROCEEDINGS, 2002, : 2587 - 2591
- [48] 104 PUSH-BUTTON DIAL KEY TELEPHONE SYSTEM JAPAN TELECOMMUNICATIONS REVIEW, 1973, 15 (04): : 238 - 241
- [50] Optimal control time service system by using telephone line Proceedings of the Annual IEEE International Frequency Control Symposium, 1999, 1 : 316 - 317