IDM-NT202B台式2路电话光端机

---

title: "IDM-NT202B Desktop 2-Channel Telephone Optical Terminal"
model: "IDM-NT202B"
category: "Telephone Optical Terminal"
tags:

• "2-Channel Telephone Optical Terminal"
• "2-Channel Telephone Optical Terminal Price"
• "2-Channel Telephone Optical Terminal Manufacturer"
• "2-Channel Voice Optical Terminal"
• "Desktop Telephone Optical Terminal"
• "Telephone Optical Terminal Circuit Board"
• "Professional Communication Equipment Manufacturer: Beijing Raytrans Digital Technology Co., Ltd."
  description: "The IDM-NT202B desktop 2-channel multi-service optical terminal features a desktop chassis structure design, providing 2 telephone interfaces and 2 shared 100M Ethernet interfaces through 1 optical fiber channel. The Ethernet interfaces of this 2-channel telephone optical terminal can be arbitrarily divided into VLANs. The IDM-NT202B desktop 2-channel multi-service optical terminal can be widely applied in public telephone network access and dedicated line information transmission for telecommunications data services, electric power, banking, public security, military, schools, highways, and other sectors."
  cover: "/images/imports/img-58306e9b.webp"
  images:
• "/images/imports/img-58306e9b.webp"
  keywords: "2-channel telephone optical terminal,2-channel telephone optical terminal price,2-channel telephone optical terminal manufacturer,2-channel voice optical terminal,desktop telephone optical terminal,telephone optical terminal circuit board,professional communication equipment manufacturer: Beijing Raytrans Digital Technology Co., Ltd."
  slug: "idm-nt202bts2ldhgdj"
  publishDate: "2026-05-12"

Overview:

The IDM-NT202B Telephone Optical Terminal extends voice and data services to various subscriber areas, serving as a substitute for remote small exchanges, enabling cross-boundary number assignment, and alleviating the load on switching offices. Alternatively, it resolves the constraints of twisted-pair copper cables in terms of frequency band and transmission distance within urban areas, thereby expanding the service coverage of switching offices. This Telephone Optical Terminal equipment can be widely applied in public telephone network access and dedicated line information transmission for telecommunications data services, electric power, banking, public security, military, schools, highways, and other sectors.

Product Features:

• The optical terminal adopts a desktop chassis structure design with high integration and compact size;
• The optical terminal provides 1 dual-fiber (or single-fiber) optical channel;
• The Telephone Optical Terminal provides 2 ordinary telephone interfaces with Caller ID (CID) functionality;
• The optical terminal provides 2 groups of shared 100M Ethernet channels, and the 2 groups of Ethernet interfaces can be arbitrarily divided into VLANs;
• The optical terminal features comprehensive alarm indication functions;

Technical Specifications:

Optical Interface

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

Ethernet

FXO/FXS Interfaces

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

Power Supply and Consumption

Power Supply Method

DC5 or AC 220V

Total Power Consumption

15W

Environmental Conditions

Operating Temperature

0°C ~ +50°C

Humidity

95% Non-condensing

Product Dimensions

Length × Depth × Height

125×100×46 (mm)