Is this module compatible with the LINK-PP device?

Yes. The CWDM-SFP10G-1270-20 has been programmed and tested for interoperability with compatible LINK-PP switches and routers.

What is the maximum transmission distance?

The Cisco CWDM-SFP10G-1270-20 Compatible LINK-PP 10G SFP+ module supports up to 20 km transmission over single-mode fiber at 10 Gbps.

Does the Cisco CWDM-SFP10G-1270-20 Compatible LINK-PP support CWDM technology?

Yes. It operates on the 1270 nm CWDM wavelength, enabling wavelength multiplexing and improved fiber efficiency.

What applications does it work best for?

Common uses include 10GBASE-LR/LW Ethernet, CWDM optical systems, data center uplinks, enterprise backbone networks, metro access and aggregation, and LTE transport networks.

Does this module support Digital Optical Monitoring (DOM/DDM), and can it be used for long-term enterprise network operation?

Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing real-time monitoring of transmit power, receive power, module temperature, supply voltage, and laser bias current. Combined with its MSA-compliant design and OEM compatibility, it provides reliable long-term performance for enterprise, carrier, and data center networks.

We're planning a campus network project requiring more than 150 pieces of the 1270nm version. Do you offer volume pricing or OEM services?

Yes. LINK-PP provides project-based pricing for bulk orders and supports OEM/ODM services, including customized labels, EEPROM coding, private branding, and customized packaging. Send us your required quantity and device list, and we'll prepare a competitive quotation for your project.

Has anyone tested this 1270nm CWDM SFP with Cisco, Juniper, HPE, Huawei, or MikroTik switches? Does it require any special configuration?

The LS-CW2710-20C is fully compliant with the SFP MSA standard and supports OEM-compatible coding. It has been successfully deployed with Cisco, Juniper, HPE, Huawei, H3C, MikroTik, Dell, and many other compatible platforms. In most cases, the module is recognized automatically without additional configuration. If you have a specific switch model, please contact us before ordering and we'll verify compatibility.

Can this 1270nm CWDM module operate over standard OS2 single-mode fiber for the full 20 km distance? Is it suitable for campus and metro Ethernet applications?

Yes. The LS-CW2710-20C is designed for Gigabit Ethernet transmission over standard OS2 single-mode fiber with a maximum reach of up to 20 km. It is widely deployed in campus backbones, metro Ethernet, enterprise access networks, and ISP aggregation scenarios where a dedicated 1270nm CWDM channel is required.

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Cisco CWDM-SFP10G-1270-20 Compatible LINK-PP 10G SFP+ CWDM 1270nm 20km Duplex LC DOM SMF Optical Transceiver Module

Name: Cisco CWDM-SFP10G-1270-20 Compatible LINK-PP 10G SFP+ CWDM 1270nm 20km Duplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 221963
Price: 116.96 USD
Availability: InStock
Rating: 4.9 (17 reviews)

# 221963

Product: Cisco CWDM-SFP10G-1270-20 Compatible LINK-PP 10G SFP+ CWDM 1270nm 20km Duplex LC DOM SMF Optical Transceiver Module
SKU: 221963
P/N: LS-CW2710-20C
Price: $ 136
Stock: 182 in Stock
Sold: 2.1K
Product URL: https://www.l-p.com/products/491915.htm

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Compatible:: Cisco; LINK-PP; Brocade; Ciena; Dell; FS; Generic; H3C; HPE; Juniper

Wavelength:: 1270nm; 1290nm; 1310nm; 1330nm; 1350nm; 1370nm; 1390nm; 1410nm; 1430nm; 1450nm; 1470nm; 1490nm; 1510nm; 1530nm; 1550nm; 1570nm; 1590nm; 1610nm

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Cisco CWDM-SFP10G-1270-20 Compatible LINK-PP 10G SFP+ Specifications

The Cisco CWDM-SFP10G-1270-20 Compatible LINK-PP module is a 10G CWDM SFP+ transceiver designed for single-mode fiber links of up to 20 kilometers. It operates at the precise wavelength of 1270nm.

Cisco Part Number	CWDM-SFP10G-1270-20	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7 Gbps
Wavelength	1270nm	Max Cable Distance	20km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB CWDM	Receiver Type	PIN
TX Power	-5 to +2dBm	RX Power	-16 to -1dBm
Receiver Sensitivity	<-15.5dBm	Receiver Overload	0.5dBm
Operating Temperature Range	0 to 70°C	Protocols	SFP+ MSA Compliant, CPRI, eCPRI, ITU-T G.652

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Q: Does this module support Digital Optical Monitoring (DOM/DDM), and can it be used for long-term enterprise network operation? By E***n on 2025-07-24

A: Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing real-time monitoring of transmit power, receive power, module temperature, supply voltage, and laser bias current. Combined with its MSA-compliant design and OEM compatibility, it provides reliable long-term performance for enterprise, carrier, and data center networks. By admin on 2025-07-24
Q: We're planning a campus network project requiring more than 150 pieces of the 1270nm version. Do you offer volume pricing or OEM services? By D***s on 2024-11-02

A: Yes. LINK-PP provides project-based pricing for bulk orders and supports OEM/ODM services, including customized labels, EEPROM coding, private branding, and customized packaging. Send us your required quantity and device list, and we'll prepare a competitive quotation for your project. By admin on 2024-11-02
Q: Has anyone tested this 1270nm CWDM SFP with Cisco, Juniper, HPE, Huawei, or MikroTik switches? Does it require any special configuration? By A***z on 2024-03-10

A: The LS-CW2710-20C is fully compliant with the SFP MSA standard and supports OEM-compatible coding. It has been successfully deployed with Cisco, Juniper, HPE, Huawei, H3C, MikroTik, Dell, and many other compatible platforms. In most cases, the module is recognized automatically without additional configuration. If you have a specific switch model, please contact us before ordering and we'll verify compatibility. By admin on 2024-03-11
Q: Can this 1270nm CWDM module operate over standard OS2 single-mode fiber for the full 20 km distance? Is it suitable for campus and metro Ethernet applications? By J***n on 2024-02-26

A: Yes. The LS-CW2710-20C is designed for Gigabit Ethernet transmission over standard OS2 single-mode fiber with a maximum reach of up to 20 km. It is widely deployed in campus backbones, metro Ethernet, enterprise access networks, and ISP aggregation scenarios where a dedicated 1270nm CWDM channel is required. By admin on 2024-02-27

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Jason Perez

Maldives

Verified Purchase

5 .0

2026-06-11

One of the best compatible 1270nm CWDM SFP transceivers we've purchased. Reliable DOM monitoring, excellent interoperability, and consistent manufacturing quality across every batch.

3 Helpful vote Comments

Evelyn Carter

Thailand

Verified Purchase

5 .0

2026-02-08

Plugged in and linked instantly. ^^

100 Helpful vote Comments

Nora Baker

Hungary

Verified Purchase

5 .0

2025-12-14

Rock-solid performance. (•‿•)

2 Helpful vote Comments

Adam Lee

Singapore

Verified Purchase

5 .0

2025-10-27

Deployment was quick across multiple Cisco access switches. Every module negotiated immediately, and all Gigabit Ethernet services became operational without additional configuration.

14 Helpful vote Comments

Donald Turner

Germany

Verified Purchase

5 .0

2025-10-20

Highly recommended! :D

78 Helpful vote Comments

Chloe Brown

Indonesia

Verified Purchase

5 .0

2025-09-16

The 1270nm wavelength matched our existing CWDM network perfectly. Installation was straightforward, and the Duplex LC interface worked flawlessly with our existing fiber patch panels. (^_^)b

71 Helpful vote Comments

Ashley Campbell

Japan

Verified Purchase

5 .0

2025-08-06

Installed this 1270nm CWDM SFP on a 20 km OS2 single-mode fiber link between two office buildings. The Gigabit Ethernet connection came up immediately, and DOM readings have remained stable since day one. :)

12 Helpful vote Comments

Rachel King

Belgium

Verified Purchase

5 .0

2025-07-02

Exactly what we needed.

31 Helpful vote Comments

Tyler Thomas

Austria

Verified Purchase

5 .0

2025-04-14

Using this module for a campus backbone saved us from deploying additional fiber infrastructure. Stable optical performance over the full 20 km distance and accurate DOM diagnostics make maintenance much easier.

81 Helpful vote Comments

Ashley Torres

Lithuania

Verified Purchase

5 .0

2025-02-13

Our engineering team selected this model after comparing several compatible 1270nm CWDM optics. Compatibility, signal quality, and overall cost made it the clear winner.

9 Helpful vote Comments

Ryan Gonzalez

Germany

Verified Purchase

4 .0

2024-09-11

The courier delayed the shipment by a couple of days, but the transceiver itself worked exactly as advertised. Build quality and optical performance are excellent. :P

79 Helpful vote Comments

Allison Robinson

Israel

Verified Purchase

5 .0

2024-09-05

Reliable every day.

24 Helpful vote Comments

Sarah Rogers

Ireland

Verified Purchase

5 .0

2024-06-21

We deployed these modules for an ISP aggregation project connecting remote access nodes over 20 km SMF. Link stability has been excellent, even during continuous 24/7 operation.

87 Helpful vote Comments

Emily White

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2024-05-17

Very impressed with the quality. Optical power stayed within specification throughout our acceptance testing, and the module established a stable Gigabit Ethernet link immediately.

30 Helpful vote Comments

Emily Perez

Netherlands

Verified Purchase

5 .0

2024-05-03

We installed these modules in an enterprise campus connecting multiple buildings over standard OS2 single-mode fiber. Every 20 km link has remained stable, and the 1270nm wavelength integrates perfectly into our existing CWDM infrastructure.

42 Helpful vote Comments

Rebecca Thompson

Sweden

Verified Purchase

5 .0

2024-02-16

Running continuously inside a carrier access network for several months now. No packet loss, no unexpected disconnects, and optical diagnostics remain consistent throughout daily monitoring.

64 Helpful vote Comments

Christian Lewis

Morocco

Verified Purchase

5 .0

2024-02-08

We've installed more than forty of these 1270nm CWDM modules across several enterprise sites. Every unit passed testing, and none of our switches reported unsupported transceivers.

24 Helpful vote Comments