Hi David,

As part of the presence packet, you will be able to get this info, but in a crude XML format, which you might have to parse yourself.

in Jabber IM/CAXL SDK: client.event("presenceReceived").bind(function(evt){console.log(evt.data.xml());});

results in

<presence xmlns="http://jabber.org/protocol/httpbind" from="shjayago@alpha-cup.cisco.com/composed" to="shjayago@alpha-cup.cisco.com"><c hash="sha-1" node="http://cisco.com/cup/caps" ver="L0mwOaX6n8VnczsxLk2dMU2QzAg=" xmlns="http://jabber.org/protocol/caps"/><priority>127</priority>
<presence entity="sip:shjayago@alpha-cup.cisco.com" xmlns="urn:ietf:params:xml:ns:pidf"><person id="shjayago" xmlns="urn:cisco:params:xml:ns:pidf:rpid"><preferred-phone>BUSINESS</preferred-phone><activities><available/><phone-status>available</phone-status><im-status>available</im-status></activities></person><display-name xmlns="urn:ietf:params:xml:ns:pidf:cipid">Shankar Ganesh Jayagopi</display-name>
<tuple id="4463933f-129e-1d36-27f8-0e235d8fc6ea-9a86b77b-4875-98cd-ed2c-a507345c2e54" xmlns="urn:ietf:params:xml:ns:pidf"> <status> <basic>open</basic> </status> <sc:servcaps xmlns:sc="urn:ietf:params:xml:ns:pidf:servcaps"> <sc:audio>true</sc:audio> </sc:servcaps> <contact priority="0.8">sip:81384655@10.53.40.14:5060;dpkid=9a86b77b-4875-98cd-ed2c-a507345c2e54;npkid=4463933f-129e-1d36-27f8-0e235d8fc6ea</contact> <model>unknown</model> <deviceID>0022905C69E3</deviceID> <timestamp>2012-04-25T17:45:05Z</timestamp> </tuple> <tuple id="Jabbersampleclient" xmlns="urn:ietf:params:xml:ns:pidf"><status><basic>open</basic></status><servcaps xmlns="urn:ietf:params:xml:ns:pidf:servcaps"><type>text/plain</type><type>application/x-cisco-cupc+xml</type><text>true</text></servcaps></tuple>
</presence></presence>

Note 1: evt.data is an object of type jabberwerx.Presence, which has handy functions like getStatus etc.
Note 2: If there are multiple DNs for a contact, you should be able to see them all in the presence packet.

thanks
Shankar