Create your XML file with your customers names & phone Numbers
Then upload to the Portal ( as seen below )

Add these two lines of code to your phones template
remote_phonebook.data.1.url = http://sipregistration.com/clpcnp/c9p_remotephonebook.xml ( the last part of this line, the xml file name, should be unique to your customer )
remote_phonebook.data.1.name = Remote PhoneBook
Below is what the phones web gui will show you after autoprovision at >> Directory >> Remote PhoneBook

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ATTACHED IS THE SAMPLE XML FILE but below is what the inside of the xml file look like
You can create this is notepad and SAVE AS XML ( even if the file extension isn't in the pull down box, just add the .xml at the end
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<YealinkIPPhoneDirectory>
<DirectoryEntry>
<Name>Test Name</Name>
<Telephone>2125551212</Telephone>
</DirectoryEntry>
<DirectoryEntry>
<Name>Test Name</Name>
<Telephone>3106</Telephone>
<Telephone>9145551212</Telephone>
</DirectoryEntry>
<DirectoryEntry>
<Name>Test Name</Name>
<Telephone>3102</Telephone>
<Telephone>8455551212</Telephone>
</DirectoryEntry>
</YealinkIPPhoneDirectory>
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