What codecs does Axon support?

With regards to phone calls made from one phone to another, this question is irrelevant because codec negotiation is done by the two phones and not by Axon. If you have an external line connected to IMS through a group/queue and are playing on-hold music, Axon will use any of uLaw, aLaw, GSM or G726, depending on which codec the other end prefers.

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