6 Feb
2006
6 Feb
'06
7:54 p.m.
Hi Joao,
Joao Pereira schrieb:
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.
I propose to do detailed network and traffic engineering to
ensure that you select an appropriate solution.
Hope this helps.
Thanks!
Joao Pereira www.fccn.pt
Regards,
Michael
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