InnoMedia MTA8328 Administrative Guide
Page 27
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or 30ms)
•
Opus/48000/2 - Set Ptime, dynamic
payload type, wideband|narrowband
mode, and vbr (variable bit rate)|cbr
(constant bit rate).
Telephone-Event
Configure payload type for Telephony
Events. Two options available.
•
Telephone-Event/8000: for use with
codecs operating at a 8000Hz RTP
timestamp clock rate
•
Telephone-Event/48000: for use with
codecs operating at a 48000Hz RTP
timestamp clock rate
4.1.4
SIP Timer Setting
SIP timers define transaction expiration timers, retransmission intervals when UDP is used as a transport, and
the lifetime of dynamic TCP connections. The retransmission and expiration timers correspond to the timers
defined in RFC 3261.
Figure 22. SIP Timer Setting
Basic Timer
Description
Round Trip Time
Estimate (T1)
Estimated time it takes for a packet to make
a round trip from the device to the far end
and back.
Max Retransmit
Interval (T2)
The maximum retransmit interval for non-
INVITE requests and INVITE responses.
Invite Retry Times
The maximum number of times that a SIP
INVITE is retransmitted if no response is
