Hi Amit,
Yes, you need to have a minimum IOS version 11.3 or higher at both the sides
with IPSEC feature in it.
Some times i have found problems in having a differant IOS version at both
ends, and this is what cisco also recommends.
Rajeev
Amit Gupta <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi All,
>
> Help needed on the prerequisites in the form of IOS
> for configuring VoIP over an International Leased
> Private Circuit.
> Do the Cisco Routers at both the sides have to have a
> minimum IOS version.
> We are using the 3640 Router at both ends.
>
> Thanks & Regards
>
> Amit
>
>
>
>
>
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