Description

Yealink phones is subscribes using application/dialog-info+xml. In this case for many phones false reported early state.

Troubleshooting

Reproduction

Not knows. Some phones is displayes properly, some is not.

Debugging Data

none

Log Messages

not yet done

SIP Traffic

In provided pcap. is subscribed two clients yealink phone and x-lite softphone.
Created call to extension 201 (sip login). For x-lite status is changed properly for yealink is not.
Filters
udp.port==13322 caller leg
udp.port==1025 callee legs
udp.srcport==5060&&udp.dstport==5060 yealink phone
udp.port==15502 xlite

blf-test.pcap.gz

packet 14 - kamailio reports 201 extension is Available to xlite
packet 25 - kamailio reports 201 is early to yealink (unexpected)
packet 108 - created call to 201 extension
packer 109 - ringing to caller
packet 118 - kamailio send ringing to caller
packet 119 - INVITE send to callee
packet 124 - callee send Trying
packet 127 - kamailio reports 201 is ringing to yalink
packet 129 - kamailio reports 201 is busy to xlite
packet 145 - kamailio send session progress to caller
packet 146 - callee send ringing
packet 154 - caller send cancel
packet 156 - kamailio send early to yealink (unexpected)
packet 156 - kamailio send Available to x-lite

Possible Solutions

not known

Additional Information

Kamailio installed from kazoo team repo

[root@kamailio01 ~]# kamailio -V
version: kamailio 5.0.3 (x86_64/linux) 
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown 
compiled on 11:07:05 Sep 23 2017 with gcc 4.8.5
[root@kamailio01 ~]# 

• Operating System:

[root@kamailio01 ~]# uname -a
Linux kamailio01.cloudpbx.ai.co.uk 3.10.0-514.6.1.el7.x86_64 #1 SMP Wed Jan 18 13:06:36 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@kamailio01 ~]# cat /etc/redhat-release 
CentOS Linux release 7.3.1611 (Core) 
[root@kamailio01 ~]# 

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