IDM-TDO

Telephone Optical Multiplexer·📅UpdatedMay 12, 2026·✍️管理员

The IDM-TDO desktop multi-service optical multiplexer mainly provides 2 telephone interfaces; it extends voice services to various user areas, serving as a substitute for remote small exchanges, enabling cross-boundary number allocation, and alleviating the load on switching offices. Alternatively, in urban areas, it overcomes the limitations of twisted pair in terms of frequency band and transmission distance, thereby expanding the service range of the switching office.

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Overview:

The IDM-TDO Telephone Optical Terminal primarily provides 2 telephone interfaces.
The IDM-TDO Telephone Optical Terminal extends voice services to various subscriber areas, serving as a replacement for remote small exchanges, enabling cross-boundary subscriber provisioning, and alleviating the load on switching offices; Alternatively, it resolves the limitations of twisted pair in terms of bandwidth and transmission distance within urban areas, thereby expanding the service coverage of the switching office. This optical terminal equipment can be widely applied in the telecommunications, electric power, banking, public security, military, education, and highway sectors for public switched telephone network (PSTN) access and dedicated line information transmission.

Product Features:

Product Features:

Adopts a desktop chassis structure design, featuring high integration and compact size;
1 channel dual-fiber (single-fiber) optical path;
Provides 2 standard telephone interfaces with Caller ID (CID) functionality;
Equipped with comprehensive alarm indication functions;

Technical Specifications:

Optical Interface

Connector Type	FC (SC, etc. customizable)	Fiber Mode	Single-mode (Multi-mode optional)
Optical Line Rate	155Mbps±50ppm	Wavelength	1310nm
Transmit Power	-2～-11dBm	Receiver Sensitivity	Better than -36dBm

FXO/FXS Interface

Audio Range	300Hz~3400Hz	Impedance	Three-element compound impedance 200Ω+560Ω//0.1μF
Compression Rate	A-law per ITU G.711	Loop Current	25mA/channel