[SR-Users] Change in RTP Payload time on the fly

[Pranav Desai]

Hello,

We have a proxy server setup that runs Kamailiov3.0.1 + RTPProxyv1.2.1.
Nathelper support has been enabled in Kamailio.

On a certain route, we call force_rtp_proxy("z120"), i.e. with resizing
parameter 'z' and argument 120ms. During a call where endpoints have
negotiated the use of G729, RTPProxy sends packets with ptime=12 (120ms),
however occasionally rtpproxy sends packets with ptime 6(60ms), 8(80ms),
4(40ms).

Under what circumstance would RTPProxy send packets with ptime < 12 ?

Regards,
Pranav Desai