<https://cignal.ai/2021/12/ip-over-dwdm-and-coherent-pluggables-impact-metro-wdm-spending/#article>
<http://schema.org/headline>
"IP-over-DWDM and Coherent Pluggables to Impact Metro WDM Spending"
<https://cignal.ai/2021/12/ip-over-dwdm-and-coherent-pluggables-impact-metro-wdm-spending/>