IDM-ENT448电话光端机 8路电话 4路以太网

---

title: "IDM-ENT448 Telephone Optical Terminal 8-Channel Telephone 4-Channel Ethernet"
model: "IDM-ENT448"
category: "Telephone Optical Terminal"
tags: [
"8-channel telephone optical terminal",
"8-channel telephone optical terminal price",
"8-channel telephone optical terminal manufacturer",
"8-telephone 4-network telephone optical terminal",
"network telephone optical terminal",
"8-channel analog telephone optical terminal"
]
description: "The IDM-ENT448 multi-service optical terminal provides a 155M optical interface in a 19-inch 1U standard chassis. The IDM-ENT448 multi-service optical terminal offers 8 telephone channels + 4 shared 100M Ethernet ports (with VLAN partitioning) + 4 E1 transparent transmission channels, with optional dual power supplies for ~220V/-48V.",
cover: "/images/imports/img-9cee21a1.webp"
images: [
"/images/imports/img-9cee21a1.webp",
"/images/imports/img-0f3b5750.webp"
]
keywords: "8-channel telephone optical terminal,8-channel telephone optical terminal price,8-channel telephone optical terminal manufacturer,8-telephone 4-network telephone optical terminal,network telephone optical terminal,8-channel analog telephone optical terminal"
slug: "idm-ent448dhgdj-8ldh-4lytw"
publishDate: "2026-05-12"

Overview:

The IDM-ENT448 Telephone Optical Terminal utilizes the fiber interface, digital trunk interface, or analog subscriber interface resources equipped on the central office switch. Through the IDM device, voice and data services are extended to various subscriber areas, serving as a substitute for remote small exchanges, enabling cross-boundary subscriber provisioning, and deferring the construction of switching offices. Alternatively, it resolves the constraints of twisted-pair copper cables in terms of bandwidth and transmission distance within urban areas, thereby expanding the service coverage of the switching office.

Product Features:

• Adopts a 19-inch 1U standard chassis for easy installation.
• Optical interface rate of 155Mbps, with FC/SC/LC optical connector options and selectable transmission distances.
• Provides 4 Ethernet service ports, with 4 shared line-rate 100Mbps Ethernet channels supporting VLAN partitioning.
• 4 transparent E1 service interfaces in BNC connector format.
• Provides 8 telephone service interfaces with Caller ID support.
• Comprehensive function control switches and alarm indication features.

Technical Specifications:

Optical Interface

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

E1 Interface

Line Rate	2048Kbps	Line Code	HDB3
Standard Protocol	Supports ITU-T G.703	Impedance	75Ω/120Ω
Frame Structure	PCM30/31	Signaling	Channel-associated signaling

Ethernet

Connector Type	RJ-45	Transmission Rate	10/100Base-T 10M/100M
Standard Protocol	Supports IEEE802.3	Duplex Mode	Full/Half duplex/Auto-negotiation

FXO/FXS Interface

Audio 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

DC-48V or AC 220V

Power Consumption

40W ±10%

Environmental Conditions

Operating Temperature

0ºC～40ºC

Humidity

≤90% (non-condensing)

Product Dimensions

Length×Depth×Height

440×230×45 (mm)

Application Example: