Hi all, I am new to SIP and Im trying to figure some things out. Id like to ask if anyone has a topology they might be willing to share so that I can try to understand the SIP components and what I might need to do on a particular project I have. Im going to have to implement a SIP solution for VoIP hosting, and Im not sure what I need exactly. I typically do installs at one company where they use SCCP, and its all behind one location. But now, Im looking at implementing a solution that sits at one location, and has many remote locations. Im not sure really how to do this or the components that are needed in this case for SIP. Ive read over documents about SIP, but I cant seem to understand what I need to do exactly. I have a CUCM ver 6.x at the moment, and plan on using it, but at this point, Im not sure what else I need. Im sure I need a gateway, but in the SIP world, Im not sure even what that gateway is going to be called (redirect server?, proxy server?)??? If anyone out there has a diagram of a solution like this, I sure would appreciate you sharing it with me. Thanks.