Dear sir,
Plz inform us how can we make a voip switch and billing use OpenSips. -------------------- Best Regards, * Md.Tajul islam Riyadh * Sales Department * Tellbd Service* Chowdhurybari, Godnail, Narayangonj, Bangladesh Mobile: *+88 018 42 46 0000* | *+88 016 72 46 0000* http://tellbd.com | supp...@tellbd.com <https://www.facebook.com/tellbd> <https://plus.google.com/+Tellbd> <https://twitter.com/tellbd> <https://www.youtube.com/c/tellbd>[image: Tellbd] <http:///>[image: tel...@gmail.com] <tel...@gmail.com> <tel...@yahoo.com> <http://www.tellbd.com>
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