[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
  Is there a way to stop incoming calls from being muted Janelle 1 106 11-24-2020 04:26 PM
Last Post: thanhan
  Direct IP Call Outside LAN with specific port BumbleBears 2 1,239 05-28-2020 02:13 PM
Last Post: Lewis-H
  IP Phone sometimes does not receive calls from my own mobile phone. willywonka 4 1,607 05-27-2020 01:12 AM
Last Post: willywonka
  Outgoing calls fail - Forbidden TotalNet 4 1,887 05-07-2020 08:30 PM
Last Post: TotalNet
  Some calls missing from Paced Calls History ipandco 3 1,472 01-21-2020 03:30 PM
Last Post: ipandco
  Record all calls to USB dcfindlay 1 1,145 12-02-2019 08:39 AM
Last Post: Paz_Yealink
  Is there a way to make the "calls are forwarded on no answer TO VOICEMAIL" go away? justingoldberg 1 1,581 10-14-2019 06:56 AM
Last Post: Garry_Yealink
  Set PC port link to 1Gb from provisioning file avayax 1 1,288 09-10-2019 03:30 PM
Last Post: complex1
  SIP-T21P_E2 refusing calls issue Alvaro 1 1,131 09-10-2019 02:36 PM
Last Post: Alvaro
  Missed Calls not shown on T48G Germain 1 1,228 08-22-2019 07:54 AM
Last Post: Babylonia

Forum Jump:


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

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