6 Feb
2006
6 Feb
'06
9:58 p.m.
Michael Heckner wrote:
Hi Joao,
Joao Pereira schrieb:
Ok, but can I do the same with a B2BUA in my SER/Asterisk box?
Hi,
As many of you may know, we are undertaking several tests in order to
test
the interoperability between several PBX IP from different vendors.
Until
now, we were trusting that the VoIP IP PBX were good enough to be
interconnected directly, however, one of the vendors have presented
the "SBC" concept.
The "SBC" (Session Border Controller) is not a new concept since we were
using it anyway when we setup a (Asterisk+SER+SIP Proxy) Box to
handle the
"on-net dialout" calls.
I'm now overwhelmed with the amount of SBCs that are suggested by the
vendors
to implement a solution.
(http://www.juniper.net/solutions/literature/solutionbriefs/351085.pdf)
Can anyone drop me some lines about this? I urgently need some
feedback on
this.
the SBC must be present whenever you leave your IP network.
If you deal with residential users, and you work with a SIP Proxy, you
want to hide your proxy and your internal topology from the outside.
So you need an SBC there, or, speaking more precisly, one interface of
the SBC must concentrate the external network traffic,
The same is true, when you do interconnection with other carriers,
instead of publishing the IP address of your proxy, you provide them
with (another) IP address assigned to an interface of the SBC.
The amount of SBC is dependng on the expected network
traffic, and the
amount of interfaces, you require. Some boxes work perfectly with
logical interfaces, i.e. assign multiple IP addresses to a single
physical interface.
Yes, thats something I can put in my SER/Asterisk box, instead of buying
some proprietary SBC.
I propose to do detailed network and traffic engineering to ensure
that you select an appropriate solution.
Do you know where can I find more information about VoIP WAN
deployments? I want to know if the SBC is the only solution, or if it is
the market demanding solution. Thats because I m already calling outside
my LAN, and doing trunking with telcos, without the SBC....
Joao Pereira
FCCN