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See ya later PSTN...
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26-07-2022, 20:46
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Skie
a giant headend
Join Date: Jan 2011
Location: Liverpool
Posts: 1,166
Re: See ya later PSTN...
21CV = 21st Century Voice. Lending BT's terminology. BT used 21C
N
, to indicate their entire network was changing to IP based routing. For VM it's just their voice network.
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