### 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](https://github.com/kamailio/kamailio/files/1849284/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**:
<!--
Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu
16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
Kernel details (output of `uname -a`)
-->
```
[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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