[YMCS/YDMP Free Trial Program]Yealink would like to offer Free Trial Program of Yealink device management service for our current eligible customers. You can see the details below.
https://www.yealink.com/ydmp-freetrial-2020


Post Reply 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
T23G Transfer Sent using incorrect transport.
Author Message
JMComstock Offline
Junior Member
**

Posts: 12
Joined: Jan 2015
Reputation: 0
Post: #1
T23G Transfer Sent using incorrect transport.
Hello,

This applies to 'Yealink SIP-T23G 44.80.0.80'

I have 100's of T23G that fail to send the REFER sip message using the correct transport.

The T23G registers via TCP correctly. Calls are initiated and received correctly over the TCP connection. However, when the phone needs to transfer an existing call either in Attended or Unattended mode, it tries to send the SIP REFER message over UDP.

For the call that it is transferring, it correctly places the call on hold via the TCP connection:

Here is the INVITE that places the call on hold:

Jan 18 19:41:30 sua [567]: NET <5+notice> [000] reusing connection (to dest=2xx.2xx.1xx.84:5080)
Jan 18 19:41:30 sua [567]: NET <6+info > [000] socket node:2xx.2xx.1xx.84 , socket 19 [pos=0], connected
Jan 18 19:41:30 sua [567]: DLG <5+notice> [000] Message sent: (to dest=2xx.2xx.1xx.84:5080 len=1226)
Jan 18 19:41:30 sua [567]: DLG <6+info > [000]
Jan 18 19:41:30 sua [567]: DLG <6+info > [000] INVITE sip:3xx7xx6717@2xx.2xx.1xx.84:5080;transport=tcp SIP/2.0^M
...
Jan 18 19:41:30 sua [567]: DLG <6+info > [000] a=sendonly^M

The correct OK and ACK follow.

The phone then issues the REFER via UDP!:

Jan 18 19:41:33 Log [608]: TALK<6+info > BlindTransfer Number[102]
Jan 18 19:41:34 Log [608]: CUIT<6+info > RequestTransfer: [102]

Jan 18 19:41:34 sua [567]: DLG <5+notice> [000] Message sent: (to dest=2xx.2xx.1xx.84:5080 len=562)
Jan 18 19:41:34 sua [567]: DLG <6+info > [000]
Jan 18 19:41:34 sua [567]: DLG <6+info > [000] REFER sip:3xx7xx6717@2xx.2xx.1xx.84:5080;transport=tcp SIP/2.0^M
Jan 18 19:41:34 sua [567]: NET <5+notice> [000] ===>>>> UDP socket 2xx.2xx.1xx.84:5080: send 562 bytes

This is causing a major issue for us as we have 100's of the T23G out in the field.

This does not happen on T22, and T48 phones.

Thanks for looking at this!
01-19-2016 04:34 AM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 


Messages In This Thread
T23G Transfer Sent using incorrect transport. - JMComstock - 01-19-2016 04:34 AM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  T23G Connecting PC causes "Network Unavailable" MonkeySeeMonkeyDo 0 3,775 02-15-2022 12:59 AM
Last Post: MonkeySeeMonkeyDo
  T26P failed to register with TLS transport tvt 0 4,009 10-29-2021 02:58 PM
Last Post: tvt
  T23G does not respond to network aciacci 1 7,358 05-07-2021 12:11 AM
Last Post: complex1
  Forwarding - Action URI - T23G matiasarw 0 5,140 03-14-2021 08:13 AM
Last Post: matiasarw
  Multiline Transfer T29G pedro_indy 0 5,739 11-27-2020 01:11 AM
Last Post: pedro_indy
  how to connect yealink T23G to mikrotik openvpn server m.taghavi 4 15,547 10-11-2020 11:31 AM
Last Post: bozko
  T23G Unable to Obtain IP Address xBrito 6 19,092 05-21-2020 01:05 PM
Last Post: jolouis
  Used T23G, can't factory reset, can't update MonkeySeeMonkeyDo 3 11,962 05-19-2020 07:19 PM
Last Post: Yisroel_MongoTEL
Smile Can a T29G Config.bin file be uploaded into a T23G Red Stone Telecom 0 4,957 03-29-2020 08:35 PM
Last Post: Red Stone Telecom
  Attended transfer not working T29G chysky@slany.cz 1 7,077 02-11-2020 02:48 PM
Last Post: chysky@slany.cz

Forum Jump:


User(s) browsing this thread: 1 Guest(s)

Contact Us   Yealink   Return to Top   Return to Content   Lite (Archive) Mode   RSS Syndication