Stopping Ghost and Spam Calls

Step 1: check whether the calls came through Click2Call

Look in Records

Log in to the portal and open Account → Records. Find the times the ghost calls rang.

If the calls are listed

They are real calls from the phone network — usually robocallers or an overseas call centre. Go to the next section.

If the calls are NOT listed

Something on the internet is calling your phone directly, bypassing Click2Call. Skip to "Calls that don't appear in Records".

Calls that appear in Records: block or screen them

• Block specific numbers: Voice → Line Manager → click the number → Incoming Calls → Blacklist and Whitelist Options → enter the numbers in Blacklisted or Whitelisted Callers (one per line, with area code; * works as a wildcard), leave Matching Caller Action on Blacklist Applied → Save. From a handset you can also dial *60 followed by the number to block it, and *80 followed by the number to unblock it.
• Reject anonymous callers: on the same page, tick Reject all anonymous calls? Star codes: *77 on, *87 off.
• Other options on the same page: Reject all calls from overseas?, and Block all mobiles from calling this number? (callers hear a message saying mobiles are blocked). You can also send blocked callers to a forwarding number instead of a busy tone.
• Screen callers: Incoming Calls → Call Screening makes callers say their name first, and you choose whether to take the call. Star codes: *32 screen anonymous callers, *33 screen all callers, *34 turn screening off.
• Persistent nuisance callers: contact support with the times and numbers and we'll check for you whether they can be blocked at the network level.

Calls that don't appear in Records: lock down your network

These come from automated scanners on the internet that look for phones listening on ports 5060 and 5061 and try to call them. They mean your phone or PBX is reachable from the internet, usually because of a port-forwarding rule on your router.

Why this matters

Besides the nuisance, these scans are attempts to break into a PBX and use it to make expensive international calls at your cost.

What to do

1. Remove any port-forwarding rules on your router that send ports 5060 or 5061 to a phone or PBX. Click2Call does not need them.
2. If your PBX genuinely needs to be reachable (for example, it uses SIP Peering), restrict those ports with a firewall rule so only sip.click2call.com.au can reach them.
3. Switch the device to TLS or port 50600 (see SIP Settings for Desk Phones, Adapters and PBX Systems).
4. Change the line password in Voice → Line Manager and update your devices.