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Polycom double registry configuration

Article describes how to increase voice network reliability by using double registry feature of Polycom phones.We assume that you already have a basic knowledge about VoIP network architecture and elements necessary to establish server based internal call.

Advantages:

Double registry feature eliminates the single point of failure problem. In case of primary server breakdown the secondary takes over registry role maintenance.

Topology:

Following drawing shows the case:

Pre requirements:

In order to perform described steps we need:

• Two SIP servers with register role up and running.
• Polycom SoundPoint IP phone with current firmware and BootROM.
• IP communication between phone and both servers
• Manual IP addressing or DHCP server that handles phone's requests. DHCP server has to pass appropriate TFTP server address (SipX IP address) for provisioning to work).

* Go to http://www.polycom.com/emea/en/support/voice/soundpoint_ip/soundpoint_ip.html to check if you have newest software (you can always check the phone's software version by using dialpad Menu -> Status... -> Platform... -> Phone... for BootROM version, Menu -> Status... -> Platform... -> Application... -> Main... for firmware version).

Recommended environment:

Double registry functionality can only be configured through provisioning. We suggest to use SipX (version 3.10 and up). Double registry feature was tested on laboratory installation made of :

• SipX 3.10.2 as Primary Registration Server and provisioning server,
• Patton 4638 Gateway with registry license as Secondary Registration Server,
• Two Polycom SoundPoint IP 320/330 Phones
• DHCP Server (dhcpd Linux demon),

Steps

1. Log in to SipXconfig as admin:
2. Go to Users --> Users and click "Add User",
3. Create user (necessary fields are "User ID", "SIP Password", "PIN" and "Confirm PIN"),
4. Go to Devices --> Phones and choose from the list model of Polycom SoundPoint IP phone,
5. In the "Serial number" field enter MAC address of your phone (find the label on the back of the phone) and click OK,
6. Go to Devices --> Phones and choose newly created phone and click "Add Line"
7. Select extension created in 3) and click OK.
8. Go to Devices --> Phones and click the Line associated with the Phone.
9. Click "Registration",
10. Scroll down to "Primary registration server",
11. Enter IP address or DNS name of the primary server in the address field,
12. Enter 1 in the "register" field.
13. Scroll down to "Secondary registration server",
14. Repeat 11) and 12) for secondary server,
15. Click OK,
16. Go to Devices --> Phones, check the tick next to configured phone and click Send Profiles (that will generate configure files and save it on TFTP server)
17. On the seconded registration server create SIP account with the same "User ID", "SIP Password as on primary server.
18. On the phone select Menu --> Advanced (enter admin password) --> Admin Settings... --> Reset to Default... --> Reset Device Settings... and confirm with YES.
19. If the provisioning works fine phone should be able to download configuration from TFTP server and register on both servers,
20. To check registrations on SipX go to Diagnostics --> Registrations,

Laboratory test results:

From the user perspective, switching to secondary server is almost unnoticeable and takes less than 3 seconds. As soon as phone successful register with primary server it automatically returns to use it.

See also:

Polycom 320/330 configuration guide

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Polycom