This attribute indicates the result of negotiating DTMF regeneration
with the remote end across the subnet. The parameter used for
negotiating with the remote end is provisioned in Vncs Vp
dtmfRegeneration.
If negotiatedDtmfRegeneration is on, DTMF tones received from
the link are first converted to digits before being sent to the subnet.
When a digit is received from the subnet, its respective DTMF tone
is generated before being sent to the link.
If negotiatedDtmfRegeneration is off, DTMF tones are transported
transparently.