[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

Yealink Forums » IP Phone Series » General topics » Ghost Calls from Port Scanning

Post Reply 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Ghost Calls from Port Scanning
Author Message
ctiefel Offline
Junior Member
**

Posts: 24
Joined: Nov 2013
Reputation: 0
Post: #1
Ghost Calls from Port Scanning
We have large deployments of Yealink T20 phones where individual phones are running off of individual home networks. Lately we have been seeing a large increase of what we are calling "ghost calls". This seems to be the end result of hackers port scanning known VOIP ports. The caller ID will say "100" or "1000" and ring the phone constantly, usually at night, and when they pick it up there is no one there.

Is there a way in the Yealink phone, older firmware or newer firmware, to restrict incoming calls to only those coming from the SIP server?
11-08-2013 10:01 PM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 


Messages In This Thread
Ghost Calls from Port Scanning - ctiefel - 11-08-2013 10:01 PM
RE: Ghost Calls from Port Scanning - Fuur - 11-25-2014, 07:01 PM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Share Wi/Fi to PC port kevins1701 2 3,333 08-12-2022 01:33 AM
Last Post: seraphim19
  W80 Emergency Calls with Locked Keypad sandro84 0 1,345 10-18-2021 07:57 PM
Last Post: sandro84
  Silencing / Rejecting Queue Calls asafayan 1 2,592 07-13-2021 03:45 AM
Last Post: complex1
  RTCP-XR MOS-CQ scores 0 on many calls CyVon 0 2,078 04-01-2021 04:18 AM
Last Post: CyVon
  Making calls without registration : T22P phatcow 3 9,464 02-09-2021 09:59 PM
Last Post: naveenhome64
  Calls to more than three participants? It's possible? Cimmerio 4 5,149 01-29-2021 10:13 PM
Last Post: Yisroel_MongoTEL
  Is there a way to stop incoming calls from being muted Janelle 0 2,387 11-16-2020 07:05 AM
Last Post: Janelle
  Direct IP Call Outside LAN with specific port BumbleBears 2 5,167 05-28-2020 02:13 PM
Last Post: Lewis-H
  IP Phone sometimes does not receive calls from my own mobile phone. willywonka 4 8,331 05-27-2020 01:12 AM
Last Post: willywonka
  Outgoing calls fail - Forbidden TotalNet 4 9,658 05-07-2020 08:30 PM
Last Post: TotalNet

Forum Jump:


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

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