Thread: General See ya later PSTN...
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Old 26-07-2022, 20:46   #8
Skie
a giant headend
 
Join Date: Jan 2011
Location: Liverpool
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Re: See ya later PSTN...
21CV = 21st Century Voice. Lending BT's terminology. BT used 21CN, to indicate their entire network was changing to IP based routing. For VM it's just their voice network.
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