We are setting up remote LTE cell tower nodes in sub-zero winter conditions — will this module cold-start without issues?

Yes, this module is rated for industrial temperature. For outdoor LTE remote radio head (RRH) deployments, our industrial-grade modules are tested to cold-start and operate reliably across the full range of -40°C to +85°C (-40°F to +185°F).

We're running a 35km link between data centers — do we need single-mode or multi-mode fiber patch cords for this module?

You must use single-mode fiber with duplex LC connectors. Multi-mode fiber is strictly unsuitable for DWDM long-haul links due to extreme modal dispersion at C-band wavelengths.

Can we plug this DWDM module directly into channel 26 of a standard 100GHz ITU grid passive MUX/DEMUX?

Yes, absolutely. This LS-DW2610-40I module is precisely hard-coded to 1556.55nm (Channel 26) in compliance with the standard 100GHz C-Band ITU grid. You can plug it directly into Port/Channel 26 of any standardized passive MUX/DEMUX unit without additional frequency offset adjustment.

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Cisco DWDM-SFP10G-56.55-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)

Name: Cisco DWDM-SFP10G-56.55-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 223418
Price: 257.14 USD
Availability: InStock
Rating: 4.9 (39 reviews)

# 223418

Product: Cisco DWDM-SFP10G-56.55-I Compatible LINK-PP C26 10G SFP+ DWDM 1556.55nm 40km Duplex LC DDM SMF Optical Transceiver Module (Industrial)
SKU: 223418
P/N: LS-DW2610-40I
Price: $ 299
Stock: 268 in Stock
Sold: 441
Product URL: https://www.l-p.com/products/485965.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

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Manufacture: LINK-PP

P/N: LS-DW2610-40I

Compatible:: Cisco; LINK-PP; Arista; Brocade; Ciena; Dell; Extreme; FS; Generic; H3C; HW; Juniper; MRV; Netgear

Wavelength:: C17; C18; C19; C20; C21; C22; C23; C24; C25; C26; C27; C28; C29; C30; C31; C32; C33; C34; C35; C36; C37; C38; C39; C40

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Cisco DWDM-SFP10G-56.55-I Compatible LINK-PP C26 10G SFP+ Specifications

DWDM-SFP10G-56.55-I defines a 10G SFP+ DWDM optical transceiver at 1556.55nm within the C-band, incorporating a cooled EML laser and PIN photodiode, duplex LC connectivity, up to 40 km reach over single-mode fiber, real-time DDM support, and an operating temperature range of −40 to +85 °C.

Cisco Part Number	DWDM-SFP10G-56.55-I	Vendor Name	LINK-PP
Form Factor	SFP+	Max Data Rate	10.7Gbps
Wavelength	1556.55nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	PIN
TX Power	-1 to +2dBm	RX Power	-16 to -1dBm
Receiver Sensitivity	-15.5dBm	DDM Support	Yes
Operating Temperature Range	-40 to 85°C	Protocols	SFP+ MSA Compliant, CPRI, eCPRI

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Q: We are setting up remote LTE cell tower nodes in sub-zero winter conditions — will this module cold-start without issues? By V***s on 2026-01-11

A: Yes, this module is rated for industrial temperature. For outdoor LTE remote radio head (RRH) deployments, our industrial-grade modules are tested to cold-start and operate reliably across the full range of -40°C to +85°C (-40°F to +185°F). By admin on 2026-01-12
Q: We're running a 35km link between data centers — do we need single-mode or multi-mode fiber patch cords for this module? By B***n on 2025-08-25

A: You must use single-mode fiber with duplex LC connectors. Multi-mode fiber is strictly unsuitable for DWDM long-haul links due to extreme modal dispersion at C-band wavelengths. By admin on 2025-08-26
Q: Can we plug this DWDM module directly into channel 26 of a standard 100GHz ITU grid passive MUX/DEMUX? By D***y on 2025-06-24

A: Yes, absolutely. This LS-DW2610-40I module is precisely hard-coded to 1556.55nm (Channel 26) in compliance with the standard 100GHz C-Band ITU grid. You can plug it directly into Port/Channel 26 of any standardized passive MUX/DEMUX unit without additional frequency offset adjustment. By admin on 2026-06-25

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R***y

Morocco

Verified Purchase

5 .0

2026-05-19

We run a 10G fiber network for a university campus, connecting 12 buildings over single-mode fiber. The LS-DW2610-40I modules were installed in core and distribution switches. The 40km reach gave us plenty of margin for our longest 32km spans, and the DOM feature lets our NOC monitor optical health in real time. We’ve had zero downtime attributed to these transceivers over 3 months. The industrial temperature rating was key for our outdoor IDF closets, which see wide seasonal swings. The 100GHz C26 wavelength also fits our DWDM plan without crosstalk, and the duplex LC connector is a perfect match for our patch panels.

109 Helpful vote Comments

R***s

Poland

Verified Purchase

5 .0

2026-05-07

Smooth LC duplex latching and flawless optical power output.

64 Helpful vote Comments

L***g

Israel

Verified Purchase

5 .0

2026-04-14

We installed these 10G DWDM SFP modules on outdoor wireless cell tower nodes. Night-to-day temperature swings usually trigger link drift on cheaper transceivers, but these LINK-PP industrial-grade modules kept signal drift to zero. Highly recommended for harsh environments!

84 Helpful vote Comments

D***l

Belarus

Verified Purchase

5 .0

2026-03-27

Deployed 50 of these DWDM modules in a data center interconnect. Power consumption is low, and the EML/PIN combo gives us a solid link budget. DOM makes troubleshooting super easy when we tweak patch panels.

50 Helpful vote Comments

S***n

South Africa

Verified Purchase

5 .0

2026-03-09

Solid 40km reach on our C26 DWDM link, DOM works great!

51 Helpful vote Comments

C***t

Belgium

Verified Purchase

5 .0

2026-02-19

Clean optical budget on our 35km span, zero frame drops noticed.

44 Helpful vote Comments

K***r

Nepal

Verified Purchase

4 .0

2026-02-11

These industrial DWDM SFP+ modules are running cool inside our high-density aggregation switches with superb link budget metrics. The courier missed the Friday afternoon delivery window, forcing our tech team to reschedule the datacenter installation for Monday morning. Hardware quality is definitely 5 stars.

19 Helpful vote Comments

J***s

Ukraine

Verified Purchase

5 .0

2026-01-15

Needed industrial-grade C26 DWDM optical transceivers for power grid monitoring cabinets where ambient temps swing drastically. These LINK-PP optics transceivers have been running at full line-rate 10G speed for three months straight with zero thermal throttling or bit errors.

90 Helpful vote Comments

T***s

Bulgaria

Verified Purchase

5 .0

2025-12-26

Using these for a cell site backhaul project. The -40°C to +85°C range is real – they’ve been in a heated outdoor enclosure all winter with no alarms. The 100GHz C26 channel slots right into our existing DWDM mux.

92 Helpful vote Comments

E***s

New Zealand

Verified Purchase

5 .0

2025-12-08

C26 1556.55nm fits our 100GHz grid perfectly! No crosstalk and it lines up with our mux/demux without tweaks.

85 Helpful vote Comments

J***s

Ireland

Verified Purchase

5 .0

2025-11-22

Tested receiver sensitivity across a patched 36km single-mode fiber line, and error rates stayed well below threshold. The build quality feels rigid, and the duplex LC connector clicks in firmly. Will order another batch for our secondary ring!

79 Helpful vote Comments

S***s

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-10-19

We manage a regional fiber network with 40+ DWDM channels. The LS-DW2610-40I (C26, 1556.55nm) was deployed in 8 locations for a 10G ring upgrade. Over 2 months, we’ve seen stable Rx power between -15 and -12dBm on 35km SMF spans. The DOM data (temperature, Vcc, Tx/Rx bias) integrates into our NMS via SNMP, and the industrial temp range has handled our unsheltered roadside cabinets without a single thermal alarm. The 100GHz grid spacing aligns perfectly with our existing mux/demux, and we’ve had zero interoperability issues with our 10G switches.

126 Helpful vote Comments

B***y

Austria

Verified Purchase

5 .0

2025-09-21

Checked with our OSA — 1556.55nm accuracy is rock solid!

52 Helpful vote Comments

S***r

Macao

Verified Purchase

4 .0

2025-09-14

The DWDM module itself works flawlessly across our single-mode fiber span with zero bit errors and crystal-clear telemetry. However, regional courier routing took an unexpected detour, delaying delivery past our scheduled maintenance window. Excellent hardware performance overall, just give yourself a few extra days for shipping.

24 Helpful vote Comments

G***r

Hungary

Verified Purchase

5 .0

2025-08-27

Adding extra 10G pipes over leased dark fiber gets expensive fast. Dropping this C26 1556.55nm 10G SFP+ transceiver into our existing DWDM grid solved our capacity bottleneck overnight at a fraction of lease costs.

101 Helpful vote Comments

R***d

Malaysia

Verified Purchase

5 .0

2025-07-19

Hot-plug & go, no config needed on our 10G switches.

78 Helpful vote Comments

S***z

Romania

Verified Purchase

5 .0

2025-06-25

Deployed these LS-DW2610-40I 10G DWDM modules across a 30km single-mode fiber link connecting our remote aggregation nodes. Both Rx and Tx power levels stayed well within target thresholds. Definitely saved our quarterly budget without sacrificing optical reliability.

99 Helpful vote Comments

J***y

Maldives

Verified Purchase

4 .0

2025-06-09

We deployed these 10G DWDM optics across a 35km metro link and achieved rock-solid link-up on the first attempt. The delivery was delayed by 2 days at international customs clearance due to routine import paperwork checks. Product quality is superb, but budget extra transit time for overseas orders.

27 Helpful vote Comments

J***l

Cambodia

Verified Purchase

5 .0

2025-05-22

Deployed this industrial-grade C26 DWDM 10G optical transceiver across our regional dark fiber span using a passive MUX/DEMUX multiplexer, and the physical layer locked on immediately. The module's center wavelength stability on the standard ITU grid prevented any adjacent channel crosstalk, while the low insertion loss kept frame drops to absolute zero during high-load traffic testing. Digital Optical Monitoring (DOM) polled cleanly via SNMP, giving our engineering team real-time visibility into internal operational health across the entire optical link.

143 Helpful vote Comments

M***e

Turkey

Verified Purchase

5 .0

2025-04-28

We added channel 26 (1556.55nm) DWDM modules to our existing passive MUX/DEMUX system. The wavelength stability is precise, and insertion loss remained minimal across the entire passive multiplexer stack. Excellent option for scaling existing fiber assets.

127 Helpful vote Comments

H***i

New Zealand

Verified Purchase

5 .0

2025-04-09

Great price and quick shipping. Great seller.

65 Helpful vote Comments

K***s

Denmark

Verified Purchase

5 .0

2025-03-12

We rolled these into a campus fiber ring last month. The 40km budget gave us headroom, and the DOM readings (Tx/Rx power, temp) show up cleanly on our management platform. No handshaking issues with our switches so far.

113 Helpful vote Comments

m***s

Israel

Verified Purchase

5 .0

2025-03-06

I spent a lot of time looking at the 1000 Base-T Optical Transceiver Module and finally decided on l-p.com. The website was very well done so that eased my mind a bit. When the 1000 Base-T Optical Transceiver Module arrived I was pleased that they looked just as good as it did on the website and worked without problem.

29 Helpful vote Comments

V***d

Thailand

Verified Purchase

5 .0

2024-12-24

Everyone we interacted with was professional and very kind. We are happy with our quality RJ 45 modules & would recommend l-p.com to anyone!

44 Helpful vote Comments

T***i

United States

Verified Purchase

5 .0

2024-10-04

Link-ppstore is my first choice.

29 Helpful vote Comments

A***v

United States

Verified Purchase

5 .0

2024-08-28

very good product and Fast shipping. Will recommend to friends.

33 Helpful vote Comments

A***v

Netherlands

Verified Purchase

5 .0

2024-05-04

The staff team was able to aid us in getting up and running. Many thanks to the entire team at l-p.com!

48 Helpful vote Comments

c***t

Canada

Verified Purchase

5 .0

2024-04-19

The 10/25/40G Transceiver Modules and service has been great, we have enjoyed good performance. Response at times is a little slow.

65 Helpful vote Comments

a***A

United States

Verified Purchase

5 .0

2024-01-24

Smooth transaction, had what I needed, good prices. Doesn't get much better!

93 Helpful vote Comments

S***d

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2023-12-21

Normal simple 10/25/40G Transceiver Modules. Good snapping by Teminal 10/25/40G Transceiver Modules

29 Helpful vote Comments

R***s

Philippines

Verified Purchase

5 .0

2023-12-09

Went to this site for a computer hard drive. Quickly found exactly what I wanted and for a great price. Was done in minutes.

31 Helpful vote Comments

J***l

Romania

Verified Purchase

5 .0

2023-12-05

Nice webpage layout & selection. Good customer service when I called about items. No pressure.

6 Helpful vote Comments

M***s

Macao

Verified Purchase

5 .0

2023-11-28

The 10/25/40G Transceiver Modules are great and their service is even better. Most impressive was their communication throughout the entire process. They really answered and dealt with all my questions. Hands down, a superior online shopping experience compared to the local shop.

28 Helpful vote Comments

H***e

United States

Verified Purchase

5 .0

2023-11-19

The website was easy to navigate, and the checkout process was easy.

29 Helpful vote Comments

J***n

United States

Verified Purchase

5 .0