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Matrix: Chirpy audio on IVC trunklines using E-IPA card 

Matrix: Chirpy audio on IVC trunklines using E-IPA card 

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We have IP trunk lines between our London to New York offices

We are hearing chirpy audio one way between London and NY ,

NY to London sounds clean 

The VPN link between the sites had enough bandwidth to allow for 32 trunk lines at 256Kbp per trunk line 

All London IVC panels sound clean when talking to each other locally

 

After investigation

  • We found that the E-IPA LAN 1 (Admin / IVC) port LED was showing Orange - meaning it  was running at 100mb (see below)

  • The ETH-switch port the E-IPA card was connected to had been set and forced to 100MB  

After changing the ETH-switch port setting over to 1GB port , the IPA card LAN 1 port LED turned green and no more chirpy audio was heard 

 

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