The way these systems work is quite straightforward. When a call is connected, the IP PBX sends the endpoints to be recorded to the recorder. The recorder just captures all the RTP packets originating from the end points. The scheme is easy to implement in a hub environment. In a switched environment, things are more complicated; that's where the span port comes in.
To use the span port, the network admin must manually configure the switch to copy packets to/from the target ports to the span port. I suspect the span port might get saturated very easily. Forwarding 2 ports produces a maximum bandwidth of 200Mbps to be copied into the 100Mbps span port, add another few more ports and it'll skyrocket. Guess you'll need more switches to support large scale recording.
I was toying with the idea of using arp-spoofing, man-in-the-middle attack, to build a sniffing recorder. But, it will have a similar saturation problem like the span port method.
Just my $0.02.
lists wrote:
True * answer are there but what about non * network sniffering call monitoring. Does anyone have info on a good one. I am also searching voip-info again but so far my key words are hitting on * solutions only
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of C. Johnson Sent: Monday, June 07, 2004 5:20 PM To: [EMAIL PROTECTED] Subject: RE: [Asterisk-Users] Network Sniffing Calls for recording
It's in the Bible...
http://www.voip-info.org/tiki-index.php
Still, I'd be interested to find a solution for recording via sniffing over the net. My solution was to have my asterisk pbx's monitor directory connect to my "recording server" via a nfs mount, but that's a raggedy ann way of doing it.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of hank smith Sent: Monday, June 07, 2004 6:10 PM To: [EMAIL PROTECTED] Subject: Re: [Asterisk-Users] Network Sniffing Calls for recording
how can you record calls with asterisk? I didn't even know this was possible can some one point me to a url for info on this? ----- Original Message ----- From: "lists" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, June 07, 2004 1:30 PM Subject: [Asterisk-Users] Network Sniffing Calls for recording
Ok assuming I don't want to record calls using * but instead want aa
dedicated server that listens to a mirror port and records calls. Is there
cheap software package out there for doing this for mgcp/sccp? I knowto
if evern cut over to * there is a way but I doubt I will even cut 100% over
* so I was wonder what the list has heard of for call recording viasniffing
my gates. I know there are some out there but $100k for 40 users ishigh
to
fromfor my blood.
Offlist is fine for all flames and answers since this is a bit off topic [EMAIL PROTECTED]
OK it's a Monday when it takes 5 tries to get a email to the right
list
the right account.
Either that or someone switched the coffee pot to decaf again.
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