Zone & Bandwith 2

[Blakeney]

We have a remote site with 6 VoIP extensions connected to a CS1K at our head office. The bandwidth at the remote site is set to 128k - with 4.2 channels.

We were expecting that this would limit us to having a maximum of 4 concurrent calls in progress at the reomte site.

However, we're able to make simultaneous calls to all 6 VoIP extensions.

We were expecting that when 4 calls are in progress new callers would receive busy tone or at the very least fail to connect.

Any ideas?

 

[Nazule]

If you have 128k of bandwidth and your QOS is set to BB (best bandwidth G7.29) you should be able to run up to 9 calls. 8k + overhead = about 13k into 128k.

 

[Blakeney]

Thanks. The Codec we're using is G729a - does this make any difference to your reply?

 

[KillianK]

No, I think it was a typo,

Cheers,

Killian

 

[Blakeney]

Does this mean the overhead is typically about 5k?

 

[KillianK]

Protocol Overhead
IP 40
IP (cRTP) 5
802.3 38
FR 6
PPP 8
ATM varies

 

[KillianK]

post never kept its format, but u can work it out