IBM Sametime 9 Mobile and SUT Lite

[UPDATE] No more required for latest releae of Sametime Mobile.

This morning, I have done tests on Sametime Mobile. Sametime 9 Mobile includes SUT Lite capabilities. It is enabled via the av.allowSIPTrunking policy being true and assumes SUT-Lite trunk is set up on the server side. Making phone calls using Sametime Voice on mobile, by entering a phone number on keypad will be an SUT-Lite call if SUT-Lite is enabled.  

BUT, Sametime 9 Mobile has a specific behavior. A "+" sign is automatically added in front of the number you dial. So, my classic rules and my substitution patterns don't work for Sametime mobile

So, I have added a specific rule:

RequestURI is "sip:\+12.*" to be able to recognize sip:+12xxxx
And RequestURI pattern sip:\+(.+)@.* to remove the "+" sign before sending it to the external SIP Server.

From the Sametime trace, you can see something like thats:
[12/20/13 3:09:01:501 MST] 000000c1 proxy         3 ProxyHandler handleMAddr ENTRY  {sip:+1250@sametime9.ucalab.polycom.com}
[[12/20/13 3:09:01:501 MST] 000000c1 routing       3 RoutingCondition matches ENTRY  {Condition type: Method, value: .*} {INVITE}
[12/20/13 3:09:01:501 MST] 000000c1 routing       3 RoutingCondition matches RETURN  {true}
[12/20/13 3:09:01:501 MST] 000000c1 routing       3 RoutingCondition matches ENTRY  {Condition type: RequestURI, value: sip:\+12.*} {sip:+1250@sametime9.ucalab.polycom.com}
[12/20/13 3:09:01:501 MST] 000000c1 routing       3 RoutingCondition matches RETURN  {true}

Now, my Sametime 9 Mobile client can call audio endpoints though SIP trunk.