Yealink T42S

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones
526
(rtp-pkt-loopback).
Permitted
Values
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.
2-directed packet loopback, the loopback mirror copies the payload of the incoming
RTP packet into a new RTP packet. The packet source can compute only two-way path
statistics from the direct loopback 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
<y0000000000xx>.cfg
Description
It configures the value of dynamic payload for encapsulated RTP.
Note: It works only if the value of the parameter “sip.pkt_loopback_mode” is set to 1
(encapsulated packet loopback).
Permitted
Values
Integer greater than 98
Default
112
Parameter
sip.pkt_loopback_directed_payload
<y0000000000xx>.cfg
Description
It configures the value of dynamic payload for the direct loopback RTP.
Note: It works only if the value of the parameter “sip.pkt_loopback_mode” is set to 2
(directed packet loopback).
Permitted
Values
Integer greater than 98
Default
113
Parameter
sip.loopback.auto_answer.mode
<y0000000000xx>.cfg
Description
It enables or disables the IP phone to automatically answer the incoming loopback
call.
Permitted
Values
0-Disabled
1-Enabled
Default
1