SIP Trunk Setup for Polycom SoundPoint IP 650
Setting up your device with Voyced as your Business VoIP Provider.
What You’ll Need
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Polycom SoundPoint IP 650 phone connected to your network
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Your Voyced account details:
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Account / telephone number: Your-Voyced-DID
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Service password: YourServicePassword
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SIP server: sip.voyced.eu
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Access to the phone’s web configuration page (via IP address in browser)
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Admin login credentials for the phone
Requirements Before You Begin
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Phone running the latest Polycom firmware
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Change the default admin password
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Stable internet connection
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If using a firewall, allow outbound UDP to sip.voyced.eu and sipnl.voyced.eu on port 5060
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Disable SIP ALG on your router
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STUN must be disabled
SIP Trunk Setup Steps
1. Log in to the Web Interface
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Press Menu > Status > Network > TCP/IP Parameters to find the IP address
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Enter the IP in your browser
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Log in as admin
2. Configure SIP Server
Go to Settings > Lines > Line 1 and adjust:
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Display Name: Voyced
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Address: Your-Voyced-DID
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Authentication User ID: Your-Voyced-DID
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Authentication Password: YourServicePassword
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Label: Voyced
3. SIP Server Configuration
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Server 1 Address: sip.voyced.eu
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Port: 5060
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Transport: UDP
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DNS Mode: SRV (fallback to host and port)
If NAPTR or SRV not supported:
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Backup Server Address: sipnl.voyced.eu
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Port: 5060
4. Voicemail
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Voice Mail Number: 1233
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Subscribe to Voice Mail: Yes
5. Codec Settings
Go to Settings > Codec Priorities:
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.
6. Advanced Settings
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Caller ID Header: PAI-RPID-F
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Keep Alive Type: UDP
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Keep Alive Interval: 30
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Enable Rport: Yes
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SIP Version: RFC3261
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Enable Strict Proxy: Yes
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Transaction Timers (T1/T2/T4): 500 / 4000 / 5000
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RTP Encryption (SRTP): Disabled
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Registration Failure Retry Time: 32 seconds
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Strict UA Match: Yes
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Enable RFC4475: Yes
Save and Finalise
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Click Save/Apply
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Disable unused lines
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Reboot the phone if required
Testing Your Setup
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Call Your-Voyced-DID from another phone
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Make an outbound call
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Check:
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Clear audio in both directions
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Working DTMF (voicemail or menus)
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Correct Caller ID
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Final Tips
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Never expose the phone’s web interface to the internet
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Always use UDP
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DNS order: NAPTR → SRV → host fallback
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Keep firmware updated
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Use VLAN or reserved IP if possible
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Voyced SIP accounts do not guarantee emergency call routing
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.
