Tvheadend

It was easy to add a network in tv-headend form its url “http://my.local.ip:55555/ChannelList.m3u8”
It does not automatically add the EPG info to the channels imported. The possibilities to get full gernan EPG data are limited. Is it possible to add a standard XMLTV EPG from a URL into Tvheadend? I am using a sat2ip device "VBOX". It supplies a file "http://my.local.ip:55555/vboxXmltv.xml"

File content:

<!DOCTYPE tv SYSTEM "xmltv.dtd">
<tv generator-info-url="www.vboxcomm.com" generator-info-name="vbox">
<channel id="www.Das%20Erste.co.un">
<display-name>Das Erste</display-name>
<display-name>TV</display-name>
<display-name>S-DEU-0001044d6dca</display-name>
<display-name>Free</display-name>
<display-name>29130</display-name>
<icon src="http://my.local.ip:55555/images/tv_icon.jpg"/>
<url src="http://my.local.ip:55555/Das%20Erste"/>
</channel>
<channel id="www.ZDF.co.un">
<display-name>ZDF</display-name>
<display-name>TV</display-name>
<display-name>S-DEU-000104376d66</display-name>
<display-name>Free</display-name>
<display-name>29030</display-name>
<icon src="http://my.local.ip:55555/images/tv_icon.jpg"/>
<url src="http://my.local.ip:55555/ZDF"/>
</channel>
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Shnip
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<programme start="20161209185000 +0100" stop="20161209194500 +0100" channel="www.Das%20Erste.co.un">
<title lang="deu">Rate mal, wie alt ich bin</title>
<desc lang="deu">Bierexpertin und Modebloggerin aus Hamburg* Kandidaten: Janina Cüpper und Sophia Magdalena WenzelProduziert in HD</desc>
</programme>
<programme start="20161209194500 +0100" stop="20161209195000 +0100" channel="www.Das%20Erste.co.un">
<title lang="deu">Sportschau vor acht</title>
<desc lang="deu">* Fußball-Bundesliga, vor dem 14. Spieltag: FC Ingolstadt 04 - RB Leipzig* Doping* McLaren-Report / WADA-Pressekonferenz in LondonProduziert in HD</desc>
</programme>
<programme start="20161209195000 +0100" stop="20161209195500 +0100" channel="www.Das%20Erste.co.un">
<title lang="deu">Wetter vor acht</title>
<desc lang="deu">Wie wird das Wetter? Sonne in Stuttgart, Nebel in Nürnberg, Bremen bewölkt? Hier gibt's die aktuellen Wetterprognosen.Produziert in HD</desc>
</programme>
<programme start="20161209195500 +0100" stop="20161209200000 +0100" channel="www.Das%20Erste.co.un">
<title lang="deu">Börse vor acht</title>
<desc lang="deu">Die Börsensendung vom Frankfurter Parkett - immer kurz vor der 20-Uhr-TagesschauProduziert in HD</desc>
</programme>

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Tank you for your efforts