Does the internal DOM chip provide a history log, or is it strictly real-time telemetry?

The module delivers real-time diagnostic telemetry via the standard I²C interface (SFF-8472 compliance). Historical data logging or threshold alerting must be handled by your host switch's operating system or an external SNMP polling stack.

We manage a regional SCADA system using legacy SONET framing; does this module support Layer-1 bit transparency?

Yes, it operates natively at the physical layer for 155Mbps data rates, making it perfectly transparent to legacy SONET OC-3 and SDH STM-1 framing structures.

Is there a specific pairing rule for deploying these across our campus backbone link?

Yes, the LS-BL315501-80C (1310nm-TX/1550nm-RX) must be paired with its precise wavelength-inverted counterpart on the opposite node to establish a circuit.

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LINK-PP LS-BL315501-80C 155M SFP BiDi 1310nm-TX/1550nm-RX 80km Simplex LC DDM SMF Optical Transceiver Module

Name: LINK-PP LS-BL315501-80C 155M SFP BiDi 1310nm-TX/1550nm-RX 80km Simplex LC DDM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 205652
Price: 8.6 USD
Availability: InStock
Rating: 4.9 (25 reviews)

# 205652

Product: LINK-PP LS-BL315501-80C 155M SFP BiDi 1310nm-TX/1550nm-RX 80km Simplex LC DDM SMF Optical Transceiver Module
SKU: 205652
P/N: LS-BL315501-80C
Price: $ 10
Stock: 150 in Stock
Sold: 2K
Product URL: https://www.l-p.com/products/494035.htm

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Compatible P/N:: LS-BL315501-10C | 10km; LS-BL315501-10I | 10km; LS-BL553101-10C | 10km; LS-BL553101-10I | 10km; LS-BL315501-15C | 15km; LS-BL553101-15C | 15km; LS-BL315501-20C | 20km; LS-BL315501-20I | 20km; LS-BL553101-20C | 20km; LS-BL553101-20I | 20km; LS-BL315501-40C | 40km; LS-BL315501-40I | 40km; LS-BL553101-40C | 40km; LS-BL553101-40I | 40km; LS-BL315501-80C | 80km; LS-BL315501-80I | 80km; LS-BL495501-80C | 80km; LS-BL495501-80I | 80km; LS-BL553101-80C | 80km; LS-BL553101-80I | 80km; LS-BL554901-80C | 80km; LS-BL554901-80I | 80km

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LINK-PP LS-BL315501-80C 155M SFP Specifications

LS-BL315501-80C functions as a single-fiber 155M SFP BiDi optical transceiver that couples a DFB transmitter (1310nm) and a PIN receiver (1550nm) to sustain 80km links via a simplex LC interface across 0 to +70°C temperature range.

LINK-PP Part Number	LS-BL315501-80C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	1310nm-TX/1550nm-RX	Max Cable Distance	80km
Connector	Simplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
TX Power	-5 to +2dBm	RX Power	-32 to -6dBm
Receiver Sensitivity	-32dBm	DOM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	Fast Ethernet, Gigabit Fibre Channel, MSA Compliant

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Q: Does the internal DOM chip provide a history log, or is it strictly real-time telemetry? By V***y on 2025-11-05

A: The module delivers real-time diagnostic telemetry via the standard I²C interface (SFF-8472 compliance). Historical data logging or threshold alerting must be handled by your host switch's operating system or an external SNMP polling stack. By admin on 2025-11-06
Q: We manage a regional SCADA system using legacy SONET framing; does this module support Layer-1 bit transparency? By W***e on 2025-09-03

A: Yes, it operates natively at the physical layer for 155Mbps data rates, making it perfectly transparent to legacy SONET OC-3 and SDH STM-1 framing structures. By admin on 2025-09-04
Q: Is there a specific pairing rule for deploying these across our campus backbone link? By U***m on 2025-07-07

A: Yes, the LS-BL315501-80C (1310nm-TX/1550nm-RX) must be paired with its precise wavelength-inverted counterpart on the opposite node to establish a circuit. By admin on 2025-07-08

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S***g

Denmark

Verified Purchase

5 .0

2026-04-19

We use these 155M SFP BiDi modules for standard SDH/SONET STM-1 links in our indoor data center. They generate very little heat compared to generic brands we tried last year.

112 Helpful vote Comments

Z***k

Bulgaria

Verified Purchase

5 .0

2026-04-08

As a principal network architect for a tier-2 ISP, sourcing reliable 80km optics for legacy 155M STM-1/OC-3 backhaul links is becoming harder. We tested the LINK-PP LS-BL315501-80C across an aggressive 72km link with multiple patch panels. The 1310nm-TX / 1550nm-RX separation holds up exceptionally well. Tx power is consistently around 0dBm and Rx sensitivity stays well above the -32dBm noise floor. Digital Optical Monitoring (DOM) reads accurately via CLI, reporting real-time temperature, voltage, and bias current. Excellent product for long-haul infrastructure stability.

102 Helpful vote Comments

J***n

Israel

Verified Purchase

5 .0

2026-04-05

1310/1550nm working flawlessly on 75km link.

49 Helpful vote Comments

H***n

India

Verified Purchase

5 .0

2026-03-26

Simplex LC saves half our fiber cores! Absolute brilliance.

82 Helpful vote Comments

W***n

Brazil

Verified Purchase

5 .0

2026-03-14

Simplex LC connector fits perfectly with our existing patch cords. Saved us the cost of running new fiber lines. Highly recommended for cost-sensitive infrastructure.

61 Helpful vote Comments

P***n

Finland

Verified Purchase

5 .0

2026-02-22

Perfect for our regional ISP backbone nodes. The 155Mbps speed is highly stable, and the Tx power levels remain well within the acceptable threshold. clean product.

88 Helpful vote Comments

D***e

Germany

Verified Purchase

4 .0

2026-02-11

Modules perform perfectly at 155M over 70km fiber lines. However, the delivery took two days longer than promised by the carrier to Germany. Product itself is 5 stars, but shipping gets 3.

35 Helpful vote Comments

F***x

Italy

Verified Purchase

5 .0

2026-02-05

Solid 80km SFP, hitting full 155M line rate without issues.

67 Helpful vote Comments

L***n

Indonesia

Verified Purchase

5 .0

2026-01-28

Replacing expensive legacy SFPs with these LINK-PP transceiver modules. Great value for multi-site deployment.

70 Helpful vote Comments

B***n

Australia

Verified Purchase

5 .0

2026-01-15

We recently upgraded an old dual-fiber infrastructure to a single-strand BiDi setup to reclaim fiber assets for a lucrative corporate client. The LINK-PP LS-BL315501-80C was used to link our metro core to a remote substation 55km away. The 1310nm/1550nm wavelength pairing split the traffic flawlessly. Real-time DDM data allowed us to tune our attenuators accurately to avoid receiver saturation. Been live for 90 days with zero packet drops reported. Very impressed.

81 Helpful vote Comments

U***y

Belarus

Verified Purchase

5 .0

2026-01-02

Our field techs love these. They click into the SFP slots firmly, and the pull-tab latch mechanism feels durable, not flimsy like cheap clones.

73 Helpful vote Comments

Y***r

Brunei Darussalam

Verified Purchase

5 .0

2025-12-24

Our telecom consultancy firm frequently recommends LINK-PP for clients seeking to scale their networks while maintaining tight budgets. This 80km 155M BiDi SFP is a standard component in our long-range edge aggregation designs. It complies fully with Fast Ethernet and SDH/SONET protocols, offering high versatility for legacy infrastructure transformation. The build quality, metal shielding, and optical alignment are superb, minimizing cross-wavelength interference on the 1310nm/1550nm channels. Will definitely continue specifying this model in our upcoming network design bids.

156 Helpful vote Comments

G***n

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-12-06

DOM metrics are incredibly accurate on our edge gear.

73 Helpful vote Comments

R***e

Spain

Verified Purchase

5 .0

2025-11-15

Swapped out old dual-fiber SFPs to free up fiber cores for a new client. These BiDi modules are a lifesaver. Running smoothly on our EdgeSwitch platform.

95 Helpful vote Comments

F***n

United Arab Emirates

Verified Purchase

4 .0

2025-10-22

Good value and 100% compatible with our switches. The delivery tracking information was broken for the first 48 hours, but the package arrived safely in the end. product is solid.

38 Helpful vote Comments

N***k

Hong Kong

Verified Purchase

5 .0

2025-10-14

Highly recommend LINK-PP for network engineers looking for budget-friendly alternatives. The DOM feature integrates perfectly with our SNMP monitoring.

129 Helpful vote Comments

A***e

Belgium

Verified Purchase

5 .0

2025-09-19

Evaluating third-party optics is always a rigorous process for our operations team. We put the LS-BL315501-80C 155M SFP module through a 72-hour thermal and packet stress test in our lab before deploying to field offices. Operating at 155Mbps on Fast Ethernet/STM-1 protocols, the module showed no frame loss or CRC errors under 100% throughput generation. The Simplex LC interface design is compact and the mechanical latch mechanism feels robust enough for repeated hot-swapping during maintenance windows. For network operations centers looking to reduce Capex without compromising SLA, these are an easy choice.

90 Helpful vote Comments

I***y

United States

Verified Purchase

5 .0

2025-09-08

Fast delivery to our UK facility, well packed, and works great out of the box.

51 Helpful vote Comments

T***n

Germany

Verified Purchase

5 .0

2025-08-22

The 1310nm/1550nm wavelength separation is clean. No crosstalk noticed even under heavy traffic. Tested across our laboratory testbed first.

56 Helpful vote Comments

M***t

Hungary

Verified Purchase

5 .0

2025-07-18

These 155M BiDi SFPs saved our department budget this quarter. Running them over a 68km single-mode fiber link between two municipal offices. No signal drops so far.

109 Helpful vote Comments

E***r

Argentina

Verified Purchase

4 .0

2025-07-06

The Simplex LC connection is clean and tight. Deducting one star because the outer box arrived a bit dented by the customs inspection. The transceivers inside were fine.

22 Helpful vote Comments

V***e

Canada

Verified Purchase

5 .0

2025-06-25

We deployed these optical transceiver modules in our university campus fiber backbone spanning several remote research stations. 80km budget is more than enough for our 65km spans.

132 Helpful vote Comments

O***n

France

Verified Purchase

5 .0

2025-05-27

Using these Simplex LC optical transceivers for a basestation backhaul project. The 1310nm-TX and 1550nm-RX pairing works exactly as specified. Will buy more for phase 2.

155 Helpful vote Comments

K***h

Ireland

Verified Purchase

5 .0

2025-04-25

Clean Tx/Rx power readings on DDM monitoring console.

38 Helpful vote Comments

C***m

Austria

Verified Purchase

5 .0

2025-04-09

Our data center operations team managed a massive migration requiring legacy 155M link compatibility. We turned to LINK-PP because their technical sales team confirmed exact compatibility parameters for our older multi-vendor environment. Deployed across 12 different racks utilizing single-mode simplex LC fiber patch cords. The optical power margins are generous, meaning minor patch panel contamination doesn't instantly drop the link. DOM alerts are clean and match industry standards, making integration into our existing stack totally seamless.

104 Helpful vote Comments