Yealink SIP-T3 Administrator's Manual page 564

Default 0
Parameter sip.loopback_type
Description It configures the media loopback type.
1-rtp-media-loopback, the packet received by loopback mirror is re-encoded based on the SDP nego-
tiation. The re-encoded content is returned to the loopback source as an RTP packet with payload
type corresponding to the re-encoding format.
Permitted
2-rtp-pkt-loopback, the RTP payload is re-encapsulated and the RTP packets are looped back with a
Values new payload type and format. This type of loopback applies to the encapsulated and direct packet
loopback. Any type of encoding-related functions must not be part of this type of loopback path.
3-rtp-media-loopback & rtp-pkt-loopback, the answer must include only one of these two loopback
types and should give preference to the first loopback-type in the SDP offer.
Default
3
Parameter sip.pkt_loopback_mode
It configures the encapsulation mode of incoming RTP packet.
Description
Note: It works only if "sip.loopback_type" is set to 2 (rtp-pkt-loopback).
1-encapsulated packet loopback, the entire incoming RTP packet is encapsulated as payload within
an outer RTP packet. The loopback source can generate statistics for one-way path performance up
to the RTP level for each direction of travel.
Permitted 2-directed packet loopback, the loopback mirror copies the payload of the incoming RTP packet into a
Values new RTP packet. The packet source can compute only two-way path statistics from the direct loop-
back packet header.
3-encapsulated & directed, the loopback mirror loops back the incoming RTP packets using either the
encapsulated RTP payload format or the direct loopback RTP payload format.
Default 3
Parameter sip.pkt_loopback_encapsulated_payload
It configures the value of dynamic payload for encapsulated RTP.
Description
Note: It works only if "sip.pkt_loopback_mode" is set to 1 (encapsulated packet loopback).
Permitted
Integer greater than 98
Values
Default 112
Parameter sip.pkt_loopback_directed_payload
It configures the value of dynamic payload for the direct loopback RTP.
Description
Note: It works only if "sip.pkt_loopback_mode" is set to 2 (directed packet loopback).
Permitted
Integer greater than 98
Values
Default 113
Parameter sip.loopback.auto_answer.mode
Description It enables or disables the phone to automatically answer the incoming loopback call.
Permitted
0-Disabled
1-Enabled
Values
Default 1
<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
General Features
558