SIP bypass of VPN

[Dan Jagor]

Hello,

I've got VPN connection from Cisco 877 to ASA 5520 and on the Cisco 877 I've got SIP device which doesn't has to go through VPN. I assume that for the best audio quality I should bypass the VPN and connect directly to the SIP servers, but how to configure it??

Many thanks,

Dan

[srikanth ath]

SIP traffic flows between two sites (cisco 877 and asa 5520 VPN) or it uses internet line?

1. Let us know the traffic flow of SIP, where we can help you out on this.

2. How many ISP lines.

Regards,

srikanth

[Dan Jagor]

We use external third party service for phones. All traffic except the SIP should go thourgh VPN from cisco 877 to asa5520, but the SIP could go directly from the cisco 877 to the third party servers.

I'd assume that this way we're not really more exposed just becuase SIP is not going through VPN, but I would hope it will improve VoIP communication as it wouldn't have to go through VPN and our servers/gateway but connect directly to the SIP servers.

Only one ADSL line one the cisco 877 with IPv6 VPN to the asa5520, the SIP providers use IPv4 addresses.

Thank you for your help

Dan

[Javier Portuguez]

Hi Dan,

Please check this out:

policy-map global_policy

class inspection_default

  no inspect sip

Let me know if this makes any difference.

Thanks.

Portu.

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