Hi Robin,

There's nothing wrong with that. This is the standard way to remove a stream. Look at the section 8.2 "Removing a Media Stream" of the SDP RFC (3264) <https://www.ietf.org/rfc/rfc3264.txt>. In your case, you performing a call proposing the use of H.264 for video to a client that does not support H.264. Therefore this client answers the call removing the video stream that it just cannot support.

Cheers,
Ghislain

Le 26/03/2015 02:22, robin a écrit :

This is not the expected behaviour of a SIP client, can anyone shed some
light on this?


Linphone build is: 2.3.2-333-g59dd5e0


Config file as follows:
root@tilapia:/ # cat /data/data/org.linphone/files/linphonerc
[net]
mtu=1300

[sip]
guess_hostname=1
inc_timeout=15
register_only_when_network_is_up=1
auto_net_state_mon=0
auto_answer_replacing_calls=1
media_encryption_mandatory=0
ping_with_options=0
root_ca=/data/data/org.linphone/files/rootca.pem

[rtp]
audio_rtp_port=7076
video_rtp_port=9078
audio_jitt_comp=60
video_jitt_comp=60
nortp_timeout=30
disable_upnp=1

[sound]
playback_dev_id=
ringer_dev_id=
capture_dev_id=
remote_ring=/data/data/org.linphone/files/ringback.wav
local_ring=/data/data/org.linphone/files/oldphone_mono.wav
dtmf_player_amp=0.1

[misc]
max_calls=10


pcap in human readable form :

pastebin.com/6emaK3eQ


Robin

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