There should be no problem at all - RFC 3261 is compatible with the old RFC. ser will look for the "lr" parameter in the via headers and will use strict routing if the lr parameter is not found in the topmost via header.

regards, klaus

Simon Miles wrote:

Dear Community,

I still have gateways that confirm to RFC2543 and not the newer RFC3261. This means the use of URI and To fields are different. Is there any way of telling sip_router that it needs to conform to the old spec ?

Thanks

Simon

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