ADVA introduces the FSP 150-XJ128, the industry's first commercial 25Gbit/s carrier Ethernet demarcation device, designed to address the growing demand for 25G connectivity due to cost-effectiveness and efficiency in specific applications. The device provides a lower-cost, power-efficient solution that bridges the gap between 1G and 100G services, making it ideal for mobile and cable networks. It offers advanced features and interfaces, catering to the need for optimized Ethernet connectivity and bandwidth scalability.

1. Introducing the industry’s first commercial 25Gbit/s
Carrier Ethernet demarcation device
August 2021
Meet the FSP 150-XJ128

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Need for 25G speed
• 25Gbit/s provides cost advantages, leveraging high-volume
SFP technology without the need for QSFP
• Some applications cannot move to 100Gbit/s
• Long fiber links with poor mode dispersion require
sophisticated and expensive modulation at 100Gbit/s
Why not just move to 100G?
• Keep space and power consumption at 1/10Gbit/s levels
• Finer bandwidth granularity to better match revenue with
cost
• Optimized for robust Ethernet connectivity and stringent
timing delivery
25G – a perfect fit

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Market for 25G
• 40Gbit/s as 4x 10Gbit/s is
becoming less attractive
• 25Gbit/s with SFP28 is gaining
momentum in data centers
• Key applications in mobile, cable
networks and PON require
25Gbit/s
• Option for cost-effective service
growth from 1Gbit/s to 10Gbit/s
What is driving
growth?
Source: FS community blog, March 2020 at fs.com
25G/40G/50G/100G/200G/400G
optical transceiver market forecast

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Applications demand 25Gbit/s
• Radio base stations or
• DOCSIS 4.0 RPHY devices need 25Gbit/s
Fast bandwidth growth of 1Gbit/s services
• Immediately step from 1Gbit/s to 25Gbit/s
• Longer lifetime of demarcation device, better TCO
Moderate bandwidth growth of 10Gbit/s services
• Moving to 25Gbit/s instead of 100Gbit/s
• Lower cost, better margins
Applications and use cases of 25G services
FSP 150-XJ128

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FSP 150-XJ128 (SH) interfaces
Redundant pluggable PSUs
(same as XG108)
Management
USB
RS232 console
1000Base-T LAN
Timing
BITS
TOD/PPS
2 x access
Combo
RJ45 10/100/1000Base-T
SFP 1G
1 x access
SFP28 10G/25G
1 x access/network
SFP28 10G/25G
1 x network
SFP28 10G/25G
1 x access
SFP+ 1G/10G

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Summary
• Applications demand 25Gbit/s interfaces
• 100Gbit/s is overkill for many use cases
• Intermediate step saves cost, power and
space
• ADVA’s FSP 150-XJ128 is first 25Gbit/s
purpose-built Carrier Ethernet demarcation
device
25G is gaining momentum

7. Thank you
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