[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.

Post Reply 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
DNS or DDNS and Yealink phones
Author Message
Garfieldone Offline
Junior Member

Posts: 6
Joined: Apr 2013
Reputation: 0
Post: #1
DNS or DDNS and Yealink phones
I noticed that the T20P and T22P phones have an issue with registering to a hostname if it changes IP addresses. For background we have a number of Cisco 303's, Linksys SPA941,942, SPA 8000, Grandstream HT502 and 503, and a few others. When using a hostname as the SIP server in the phone, it doesn't refresh the IP of the hostname. If I use sample.com and register the phone it will only stay on it until rebooted.

Lets say I need to move the phone from one server to another for maintenance but do not want it visible to the field. I change the DNS for the hostname to another IP. The DNS record is set to refresh every 90 sec. Within a few min all of my Cisco, Linksys, grandstream devices are now registered on the other server. I left a phone for more than 24 hours and it still will not move. The only way to seem to make it do anything is to down the server so that the WatchDog feature reboots it, then it resolves the DNS. I am using static IP's for these phones and for the other brands. Identical settings on all brands. This reacts the same with the older firmware and the new firmware. I also made sure that it is set to register every 60 sec. It does show that it registered 1234@example.com too. I can only suspect that the phone is resolving DNS that first time and never attempts to resolve it after that. How can this be fixed?
04-11-2013 03:41 AM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 

Messages In This Thread
DNS or DDNS and Yealink phones - Garfieldone - 04-11-2013 03:41 AM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Which Yealink USB headset complies with T2xG/T2xP series ? oliv 2 1,385 02-08-2023 09:30 PM
Last Post: oliv
  [Solved] Correct password don't work anymore in SIP-T22P ip phones frog.tech 1 7,493 01-27-2021 07:45 PM
Last Post: lsk
  how to connect yealink T23G to mikrotik openvpn server m.taghavi 4 12,474 10-11-2020 11:31 AM
Last Post: bozko
Lightbulb Yealink T28P Firmware Upgrade Fails Michelth 11 52,360 06-27-2020 10:13 AM
Last Post: complex1
  Low volume yealink T21p miesvictor 2 7,604 12-05-2019 11:35 PM
Last Post: miesvictor
  MoH with Yealink T2X Phones Headon_Support 2 16,718 04-19-2019 02:27 AM
Last Post: Helia_Dar
  Yealink T27G Not Working With 802.1x Auth After 3cx v14 to v15.5 Upgrade KM Tire IT Support 1 6,433 10-18-2018 05:06 PM
Last Post: KM Tire IT Support
  Call forwarding with SIP devices Yealink and Cisco Call Manager CUCM joao.schlemm 7 22,939 08-03-2018 08:03 PM
Last Post: MarkLReed
Photo Yealink T21P E2 displays VIA and FROM headers on incoming call DmitryTsyganov 1 6,358 07-12-2018 07:28 PM
Last Post: johnkiniston
  Yealink Phones + OpenVPN Ramkumar 0 5,023 05-28-2018 06:14 AM
Last Post: Ramkumar

Forum Jump:

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

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