SIP Trunk Setup for Yealink CP965
Setting up your device with Voyced as your Business VoIP Provider.
What You’ll Need
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Yealink CP965 conference phone connected to your network
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Voyced account details:
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Account / telephone number:
Your-Voyced-DID -
Service password:
YourServicePassword -
SIP server:
sip.voyced.eu
-
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Access to the web interface or on-screen menu
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Administrator login for the phone
Requirements Before You Begin
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Update to the latest Yealink CP965 firmware
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Ensure your firewall/router allows SIP UDP to
sip.voyced.euand RTP UDP ports as per defaults -
Disable SIP ALG in your network equipment
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Test your Voyced account with a softphone if possible
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Change default admin password for security
SIP Trunk Setup Steps
1. Access the Phone’s Settings
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On the device, tap Settings → Status to find the IP address
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Enter this IP in your web browser and log in as admin
2. Create or Edit a SIP Account
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Go to Account → Register
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Fill in:
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Account: 1
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Label: Voyced
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Display Name: Your Business Name or
Your-Voyced-DID -
Register Name:
Your-Voyced-DID -
User Name:
Your-Voyced-DID -
Password:
YourServicePassword -
SIP Server Host:
sip.voyced.eu
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3. SIP Server Settings
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Preferred: DNS NAPTR
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Fallback: SRV →
sipnl.voyced.eu -
Transport: UDP
4. Advanced Account Settings
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Caller ID Header:
PAI-RPID-F -
Voicemail Number:
1233 -
Voicemail Subscribe: Enabled
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STUN: Disabled
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DNS Mode: With fallback logic
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NAT Keep Alive: Enabled
5. Codec Settings
List in this priority order (from higher quality to lower):
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G722 **
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G723 **
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G726 **
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PCMU (u-law)
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PCMA (a-law)
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G711
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G729
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Opus **
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iLBC **
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AMR-WB **
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AMR **
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GSM
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Any other codecs your device supports
Codecs marked with ** may be supported but aren't guaranteed to work across all global routes.
If you have audio issues, switch back to G711 or G729 and test again.
Testing
-
Save, reboot
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Confirm status = Registered
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Test inbound and outbound calls
Last updated: 01/08/2025
© Voyced
All information provided is copyrighted and purely informative in nature. It is maintained by Voyced with the greatest of care using reliable sources only.
Given the fast evolution of the telecom sector, Voyced does not offer any guarantee about the accuracy and completeness of the information offered.
We explicitly do not give anyone permission to use this information in any other way than to inform themselves about what (legal) requirements there may be and they need to comply with when registering Services and/or DIDs with Voyced.
