I hope someone can help me. I am looking for a setting inside the Cisco/Linksys spa 112/122 which can force the rtp source port to be the same on the sip provider - is that possible? When the spa 112/122 connects to the sip provider is the port number from the box is 16384(standard range 16384-16482 inside the spa) but on the sip provider will respons with eg. port 36741.
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