asterisk users - Nov 2006 - Cisco 7940 Firmware 8.2

Greetings,

I am cutting my teeth with SIP phones and my first issue is getting a
Cisco 7940 to Authenticate with my VoIP provider (BBTelsys).
 
I did read some notes on the vo-ip website about 7.5 being the better
firmware version. Has anyone had trouble with 8.2 and SIP registering?
Should I just downgrade to 7.5 and give it a go? I think SIP uses UDP
5060 correct? 
 
The phone is behind a firewall(NAT) I figure this might be an issue as
well. 
 
Thoughts?
Thank you for your response.

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In article
<1A65E6BAEADF9B4F865314484A13ECF160878E@atlas.athensdistributing.com>,
jstevens@athensdistributing.com says...
> Greetings,
> 
> I am cutting my teeth with SIP phones and my first issue is getting a
> Cisco 7940 to Authenticate with my VoIP provider (BBTelsys).
>  
> I did read some notes on the vo-ip website about 7.5 being the better
> firmware version. Has anyone had trouble with 8.2 and SIP registering?
> Should I just downgrade to 7.5 and give it a go? I think SIP uses UDP
> 5060 correct? 
>  
> The phone is behind a firewall(NAT) I figure this might be an issue as
> well. 
>  
> Thoughts?
> Thank you for your response.
I'm using 7.4 firmware. I didn't noticed any problems. I'm not
familiar that and further firmware brings anything that will make me change
firmware.


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Tomislav Par?ina
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