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SBC and SIP trunking
- Thread starter zodiacgam
- Start date
TheMaskedMagician
Technical User
To answer your question, one must understand the function of the SBC in the design.
SBC (Session Border Controller) basic role is to be the gateway that controls the communication between the inside world (LAN) to the outside world (WAN).
It acts as security appliance as well protecting your infrastructure from unwanted attack from the www.
So if you are connecting to an OTT (internet based) SIP trunk, it's strongly advisable to have a firewall in the middle to handle the inside -outside mapping.
This is where the SBC or Mitel's MBG comes in. You can use your own firewall for this function too, but you need to follow SIP guideline or you will all sorts of trouble with audio.
Clever men learns what Wise men shares!
SBC (Session Border Controller) basic role is to be the gateway that controls the communication between the inside world (LAN) to the outside world (WAN).
It acts as security appliance as well protecting your infrastructure from unwanted attack from the www.
So if you are connecting to an OTT (internet based) SIP trunk, it's strongly advisable to have a firewall in the middle to handle the inside -outside mapping.
This is where the SBC or Mitel's MBG comes in. You can use your own firewall for this function too, but you need to follow SIP guideline or you will all sorts of trouble with audio.
Clever men learns what Wise men shares!
Sip proxy also provides a single interface for the Signalling and Voice traffic totraverse
some sip trunk providers require this
Mitel phones will stream peer peer for audio ( only signalling is always via the MIVB itself)
so having a SIP proxy or SBC helps to force the audio via a known single interface
Its also very handy for doing captures of the entire trunk conversation ( signalling and RTP) for troubleshooting purposes
If I never did anything I'd never done before , I'd never do anything.....
some sip trunk providers require this
Mitel phones will stream peer peer for audio ( only signalling is always via the MIVB itself)
so having a SIP proxy or SBC helps to force the audio via a known single interface
Its also very handy for doing captures of the entire trunk conversation ( signalling and RTP) for troubleshooting purposes
If I never did anything I'd never done before , I'd never do anything.....
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