[asterisk-users] Running SIP on non-standard ports

[Danny Nicholas]

Can't really answer the rest of this, but you only need 40 ports open for 10
RTP calls (4 per call).

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Stephen Brown
Sent: Tuesday, June 22, 2010 12:27 PM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] Running SIP on non-standard ports

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I want to have the ability to have anonymous SIP calls hit my server but
I want to run it on different ports and create an SRV record for my
target domain.

My understanding of SIP is limited, but in a nutshell I want to
accomplish the following:

- - run SIP signaling on port 6200
- - create RTP ports on 6201-62XX

Do I really need 10k ports open for RTP!!?? I don't plan on doing more
than a 5-10 calls simultaneously, maybe less than that. Does each RTP
port represent one channel, or does it take two, one for each end
perhaps? Just trying to come up with a number...

And my assumption is also that I will only need to create an SRV record
for the SIP signaling, will I need to create SRV record(s) for the RTP
ports as well? I'm assuming the SIP signaling handles that instead?

Thanks in advance...

Stephen
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