Visiting Client Site in canada, working on H1B for a professional services in USA

[kcbxt8]

Hello,
I am working for a professional services firm in USA and am on my H1B status, we have a client in Canada who need me onsite for couple of weeks. Please let me know what type of VISA to I need.
Should I get Temporary work permit. (Client in Canada is not going to pay me directly)
Will Temporary resident Visa be enough for this?
Please let me know your opinions on my situation.

-Krishna Balam