2talk is a completely separate company from Slingshot I would not be surprised if 1/2 the staff don't know what 2talk is.
And for the record they are not in the same building they have their own office space somewhere else.

And cos people are pinging 2talk id thought id chime in :-P

--- sip.2talk.co.nz ping statistics ---
17 packets transmitted, 17 received, 0% packet loss, time 16025ms
rtt min/avg/max/mdev = 0.620/0.664/0.973/0.083 ms