SIP Trunk Setup for Avaya 9600 Series
Setting up your device with Voyced as your Business VoIP Provider.
What You’ll Need
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Avaya 9600 Series SIP-enabled desk phone
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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 or physical menu
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Admin credentials for configuration
Requirements Before You Begin
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Ensure the phone firmware supports SIP (H.323 models must be flashed to SIP)
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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. Access the Phone Menu
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On the phone, press Home/Settings
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Navigate to Administration > SIP Settings
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Enter the admin password
2. SIP Registration
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SIP User Name: Your-Voyced-DID
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Authentication Name: Your-Voyced-DID
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Authentication Password: YourServicePassword
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Display Name: Voyced
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Caller ID Header: PAI-RPID-F
3. SIP Server Configuration
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Proxy Server: 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: sipnl.voyced.eu
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Port: 5060
4. Voicemail
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Voice Mail Number: 1233
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MWI (Message Waiting Indicator) Subscribe: Enabled
5. Recommended codecs
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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Keep Alive Type: UDP
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Keep Alive Interval: 30 seconds
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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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Save changes and reboot the phone
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Disable unused lines to reduce attack surface
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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Confirm:
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Clear audio in both directions
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DTMF tones work for voicemail or menus
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Correct Caller ID
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Final Tips
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Do not expose the phone’s admin interface to the public internet
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Always use UDP
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DNS order: NAPTR → SRV → host fallback
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Keep firmware up to date
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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.
