Yes, Calix equipment does not give full functionality with non Calix SFPs.  It 
is in the alarm and telemetry part of the system, not the actual data part.  I 
think they still operate but there is enough downside to not want to use them.

From: TJ Trout 
Sent: Tuesday, September 13, 2016 11:28 PM
To: af@afmug.com 
Subject: [AFMUG] IBM g8124 locked optics

Anyone have experience with sfp compatibility? 

I just stupidly ordered a bunch of transceivers from fiberstore before doing 
research and now I'm seeing that some models are vendor locked 😂

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