Standard XML Interface?

[NancyJ]

For a while now I've been using web services where you send them some xml with parameters and they send back some xml as a response.
With 1 we send via soap with another we send it through the querystring. The soap search was straining the server somewhat so I wanted to move away from that so I asked if any other protocols were available and they said oh just use a standard xml interface.
Which confused me a little and we carried on with soap. Now we're adding another web service to our data list and we've been given the xml to send and the address to send it to.... and thats it.
Have I missed something somewhere? If you were given a url and some xml how would you send it?

[Spudhead]

XMLHTTP (http://en.wikipedia.org/wiki/XMLHttpRequest)request? Is that what you mean?

[gsnedders]

There are two standards for server/client communication using XML: SOAP and XML-RPC (the former the successor of the latter).

[NancyJ]

Thats exactly what I thought - we tried both those and they didnt work for this additional one we tried to add. In the end we sent the data as url?xml=xmldata but there was nothing in the documentation about that or anything saying what protocols were accepted by the server
Just the address and the xml to send