SIP Trunk Setup for Grandstream GXP2170
Setting up your device with Voyced as your Business VoIP Provider.
What You’ll Need
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A Grandstream GXP2170 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 interface (IP address in browser)
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Admin login credentials for the phone
Requirements Before You Begin
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Make sure the phone is running the latest Grandstream firmware
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Change the default admin password to something secure
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Have a 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 any 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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Find the phone’s IP via Menu > Status > Network Status
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Enter it in your browser
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Log in with the admin password
2. Create a New SIP Account
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Go to Accounts > Account 1 > General Settings
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Account Active: Yes
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Account Name: Voyced
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SIP Server: sip.voyced.eu (use DNS NAPTR if supported, fallback to SRV or traditional)
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Preferred: DNS NAPTR, Port 0, UDP
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If NAPTR not supported: SRV with Port 5060
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Fallback: sipnl.voyced.eu, Port 5060, UDP
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3. SIP User Info
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SIP User ID: Your-Voyced-DID
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Authenticate ID: Your-Voyced-DID
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Authenticate Password: YourServicePassword
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Name: Your-Voyced-DID
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Caller ID Header: PAI-RPID-F
4. 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.
5. Voicemail
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Voicemail Number: 1233
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Subscribe for MWI: Yes
6. Advanced Settings
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DNS Mode: SRV, fallback to A Record (IP)
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NAT Traversal (STUN): Disabled
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Local RTP Port Range: leave default unless required by network admin
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Save and apply settings
Testing Your Setup
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Make an inbound call to your Voyced number to confirm ringing and audio
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Make an outbound call to a mobile and landline
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Check voicemail by dialling 1233
Final Tips
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If calls drop or have no audio, check firewall/NAT rules and codec priority
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Keep firmware updated
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Back up your phone configuration after setup
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.
