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When to use dhcp option 119 – Polycom 1725-31424-001 User Manual

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Troubleshooting the Polycom CX700 Phone

41

To confirm the Polycom CX700 phone can locate / run ucdevice.upx (which in
turn locates the correct CPE.NBT file):

>>

Use a browser to confirm you can access the virtual directory where the

ucdevice.upx file is located:
Internal

http://pool01.contoso.com/RequestHandler/ucdevice.upx

When

hitting this link, an XML file showing the current firmware version
will be displayed if security is set properly.

External

http://ocsrp.fabrikam.com/RequestHandlerExt/ucdevice.upx

When hitting this link, an XML file showing the current software
release will be displayed if security is set properly and the reverse
proxy publishing rules map the reverse proxy FQDN to the
/RequestHandlerExt virtual directory on the pool hosting the Device
Update service.

To confirm that the Polycom CX700 phone can get to the device update files,
the following example provides instructions for a Polycom CX700 running
build 199 with planned upgrade to build 522:

Internal (assumes pool running Device Update service =
pool01.contoso.com)

http://pool01.contoso.com/DeviceUpdateFiles_Int/UCPhone/Poly
com/CX700/A/ENU/1.0.522.101/CPE/CPE.nbt

When hitting this

link, you should get prompted to save cpe.nbt if security is set
properly.

External (assumes reverse proxy FQDN = ocsrp.fabrikam.com)

https://ocsrp.fabrikam.com/DeviceUpdateFiles_Ext/UCPhone/Pol
ycom/CX700/A/ENU/1.0.522.101/CPE/CPE.nbt

When hitting this

link, you should get prompted to save cpe.nbt if security is set
properly and the reverse proxy publishing rules map the reverse
proxy FQDN to the /DeviceUpdateFiles_Ext virtual directory on the
pool hosting the Device Update service.

When to Use DHCP Option 119

You need to use the DHCP option 119 when you deploy the Polycom CX700
phone to find a domain controller to talk to.
You can sign in to a the Polycom CX700 phone in two different ways:

Using NetBIOS style (\)

Using User Principal Name (UPN) style (@)