<device>
    <serviceList>
        <service>
		<Optional/>
            <serviceType>urn:schemas-upnp-org:service:AVTransport:1</serviceType>
			<serviceId>AVTransport</serviceId>
        </service>
        <service>
            <serviceType>urn:schemas-upnp-org:service:ContentDirectory:1</serviceType>
			<serviceId>ContentDirectory</serviceId>
        </service>
        <service>
            <serviceType>urn:schemas-upnp-org:service:ConnectionManager:1</serviceType>
			<serviceId>ConnectionManager</serviceId>
        </service>
    </serviceList>
</device>