add support 4g -- >ppp

hc

2023-11-24 2b26ab132d1b33b91c84c6d732456200e8c5ee77

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# Locally computed:
sha256  bf9a17673adffcc28ff7ea18764f06136547e97bbd9edf2ec612f09b207f0659  espeak-1.48.04-source.zip