Ghost Calls

[Wilson_Yealink]

Please try below steps:
1. Upgrade the firmware to the latest version(V73). You can get the firmware from below links:
Base: 25.73.0.20 ( Base Firmware )
Handset: 26.73.0.10 ( Handset Firmware )

2.You can try to add below syntaxs to your cfg template(M7 template) and auto-provisioning it.
1). You can try this syntax in CFG template.

Code:

#!version:1.0.0.1
#The x of the parameter "account.x.sip_trust_ctrl " ranges from 1 to max accounts. For example, x ranges from 1 to 5 of W52P.
​#You need to confirm which line you used.
account.x.sip_trust_ctrl=1

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When you want to enable this sip trust control for account 1, fill 1 to “account.1.sip_trust_ctrl”.
​
Then SIP messages from other servers will refuse by the phone.
2). If it still doesn't take effect, you can disable the “Allow IP Call” in webpage or auto-provisioning and try again.

Code:

#!version:1.0.0.1
#Enable or disable the phone to dial the IP address directly; 0-Disabled, 1-Enabled (default);
features.direct_ip_call_enable = 0

If you don't know how to do auto provision, please let me know. And you get the auto provision template and user guide from below link:
AutoProvisioning
Auto_Provisioning_Guide_V73_20

thanks