Not at I know, but if you know the phone name, you can use AXL to get the phone type.
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="http://www.cisco.com/AXL/API/8.5">
<soapenv:Header/>
<soapenv:Body>
<ns:getPhone sequence="?">
<!--You have a CHOICE of the next 2 items at this level-->
<name>SEPxxx</name>
<returnedTags ctiid="?" uuid="?">
<name></name>
<description></description>
<product></product>
<model></model>
</returnedTags>
</ns:getPhone>
</soapenv:Body>
</soapenv:Envelope>
Regards,
Howard