Manufacturer product photo · E1 protection channel switching device (1U rack-mount)

CPD-100

Name: Atlas CPD-100
Brand: Zhongxin Shutong

E1 Protection Channel Switching Device

E1 Protection Channel Switching Device · 2×E1 Primary/Backup · ≤ 1ms Switching · 19″ 1U Rack-Mount

Project-Based Pricing

Volume & combo discounts — get your quote

In-stock models: 3 days to your designated warehouse after payment · Out-of-stock or insufficient stock: 7–15 working days

✓ Project-level customization & OEM supported

Get Best Price on WhatsApp Need the PDF datasheet? Get it on WhatsApp →

HOW TO GET A BETTER PRICE

Volume DiscountOrder 50+ pcs of this model

Project Combo DiscountMix any categories & models storewide in one order — no quantity limit

BIGGER

Verified End-User DiscountEnd user with a real project? Send your requirements / BOQ — best price, plus professional system design & planning advice

BIGGEST

All discounts are quoted personally — message me on WhatsApp ↑

Overview

The CPD-100 is an E1 protection channel switching device that provides E1 1+1 transmission line protection over a standard 2M transmission channel (G.703), designed to power-utility protection channel standards. It automatically selects the E1 channel with the best signal quality between the primary and backup lines based on on-site line conditions, safeguarding the reliability and security of critical E1 link data transmission. Supporting lossy, lossless, automatic, and manual switching modes, it also provides comprehensive network management that monitors E1 channel signal quality and device status in real time, reporting to the ZJPManager network management platform.

Is This the Right Fit?

Six real deployment scenarios matched to this model's actual datasheet specifications.

E1 Protection Channel Switching for Power Grid Relay Protection2 standard E1 primary/backup channel interfaces plus 1 E1 important-link interface let the device automatically select the E1 channel with the best signal quality — the primary/backup switching foundation that power-grid relay-protection communication channels depend on.

Chip-Level Sub-Millisecond E1 Protection Switching (≤ 1ms)E1 signal-quality monitoring and circuit switching are integrated into a single chip-level design, delivering a switching time ≤ 1ms — the shortest circuit-switching time the device supports, critical where every millisecond of channel interruption matters.

Railway, Pipeline & Mine Dedicated E1 Network ProtectionLOS, LOF, AIS and bit-error-threshold alarms cover the full E1 communication chain, giving the link-integrity monitoring that railway, pipeline and mine dedicated E1 networks need for their safety-critical communication links.

Power-Loss E1 Bypass PassthroughBuilt-in E1 bypass keeps the protected E1 link passing through and working normally even if the device itself loses power — a fault-tolerant design that protects communication continuity.

Lossy / Lossless Switching Mode SelectableLossy and lossless switching, together with manual and automatic protection modes, are all selectable — so switchover behavior can be matched to how much transient interruption a given E1 service can tolerate.

Dual-Power "1+1" Hot Backup for Continuous E1 ProtectionBuilt-in dual power supplies run in online "1+1" hot-backup mode, DC48V or AC220V selectable, so a single power-input failure does not interrupt the protected E1 channel.

Not a good fit if:

Only 2 standard E1 primary/backup channels plus 1 E1 important-link interface per chassis — not intended as a high-density multi-circuit E1 aggregation device.
IP40 metal enclosure only — needs a rack cabinet or additional protection for direct outdoor rain/dust exposure.
Rated operating temperature is -10°C to 60°C only — no extended/wide-temperature variant is listed for this series, so it is not suited to unheated sub-zero outdoor sites.

Key Features

Standard 19-inch 1U rack-mount design — easy installation, minimal rack space
2 × standard E1 primary/backup channel interfaces + 1 × E1 important-link interface
Lossy/lossless switching · manual/automatic protection modes selectable
Chip-level E1 link switching · switching time ≤ 1ms
LOS/LOF/AIS/bit-error-threshold multi-dimensional alarms covering the full E1 communication chain
Designed to power-utility protection channel standards
E1 bypass — link stays active even when the device loses power
E1 data loopback for line-fault diagnosis and maintenance
Dual-power "1+1" online hot backup — DC48V or AC220V selectable
ZJPManager platform integration · in-band/out-of-band management channels

Specifications

Standards & Compliance

ITU-T G.823-93	Jitter and wander control based on the 2048kbit/s hierarchy
ITU-T G.703-91	Physical/electrical characteristics of hierarchical digital interfaces
ITU-T G.704	2048kbit/s synchronous frame structure
Power-Utility Protection Standard	Designed to power-utility protection channel standards

Technical Specifications

Interface	Complies with ITU-T G.703, G.704, G.823 recommendations
Bit Rate	2048kbit/s ± 50ppm
Line Code	HDB3
Impedance	75Ω unbalanced (120Ω balanced)
System Delay	≤ 30ms
Frame Structure	Framed, unframed
Switching Mode	Lossy, lossless
Switching Decision Metrics	LOS, LOF, AIS, RAI and other alarms, bit errors
Two-Path Delay Difference	≤ 30ms
Power-Loss Protection	E1 bypass
Network Management Mode	In-band (E1), out-of-band (TCP/IP)

Power

Power Input	-48V DC (-36V ~ -72V) or AC220V
Power Consumption	≤ 10 W

Environment

Operating Humidity	≤ 95% (at 25°C)
Operating Temperature	-10°C ~ 60°C

Physical

Housing	IP40 metal enclosure
Mounting	19-inch 1U standard rack-mount
Dimensions	440 (W) × 44 (H) × 311 (D) mm

Reliability

MTBF	320,000 hours
Warranty	5 years

Models & Ordering

Model	Product Description	Price
CPD-100	2M protection channel switching device — 2 channels of intelligently switched standard E1, 1 channel of user standard E1; 1×RJ45 out-of-band management port; lossy/lossless and manual/automatic switching modes; E1 bypass for power-loss link protection; 19-inch 1U rack-mount with built-in dual redundant power supplies, DC48V or AC220V selectable.	✆ WhatsApp

This page covers the single CPD-100 model. Power input is field-selectable between -48V DC (-36~-72V) and AC220V; no wide-temperature variant is listed for this series. The requested model is CPD-100.