Which ports to open on FW for Voip

Hello,
Can anyone tell me which ports (TCP and UPD) to open on the firewall when you have ip phones and ip communicator behind it?
This just to squeeze down the range a bit.
Thanks for your help.
Kurt

Kurt,
Take a look at the following link.
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_callmg/sec_vir/udp_tcp/index.htm
Hope this helps. If so, please rate the post.
Brandon

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Serg,
>Which ports ned open on the firewall for import Ws in to the TREE ??
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Which ports need open for:...

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On Sat, 09 Feb 2008 12:55:40 +0000, mysterious wrote:
> serg wrote:
>> Ws(xp_prof)+BM39VPNclient-----NAT1---INTERNET---NAT2----BM39---PRIVETLAN
>>
>> USer work with Ws - Xp_prof_SP2. On this Xp installe BM39 VPN Client.
>>
>> Between WS and INETRNET - NAT1 (iptables).
>>
>> On the other side:
>> INTERNET--->NAT2---->BM39SERVER---->PRIVETLAN
>>
>> I ask:
>> Whic ports and protocols (and in whic directions) need open in the NAT1
>> for Allow VPN connection between WS and BM39 in this configuration.
>>
>> Serg
>>
>>
> tid10088980
Thank you.
Serg

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ok .... i just pinged www.gamesspy.com and i set it at 30 instead of the default 10 and here are my results:
Ping has started ...
PING www.gamespy.com (216.35.19.179): 56 data bytes
64 bytes from 216.35.19.179: icmp_seq=0 ttl=241 time=34.822 ms
64 bytes from 216.35.19.179: icmp_seq=1 ttl=241 time=41.560 ms
64 bytes from 216.35.19.179: icmp_seq=2 ttl=241 time=35.346 ms
64 bytes from 216.35.19.179: icmp_seq=3 ttl=241 time=29.110 ms
64 bytes from 216.35.19.179: icmp_seq=4 ttl=241 time=32.620 ms
64 bytes from 216.35.19.179: icmp_seq=5 ttl=241 time=30.933 ms
64 bytes from 216.35.19.179: icmp_seq=6 ttl=241 time=28.824 ms
64 bytes from 216.35.19.179: icmp_seq=7 ttl=241 time=28.016 ms
64 bytes from 216.35.19.179: icmp_seq=8 ttl=241 time=28.968 ms
64 bytes from 216.35.19.179: icmp_seq=9 ttl=241 time=36.142 ms
64 bytes from 216.35.19.179: icmp_seq=10 ttl=241 time=26.944 ms
64 bytes from 216.35.19.179: icmp_seq=11 ttl=241 time=28.078 ms
64 bytes from 216.35.19.179: icmp_seq=12 ttl=241 time=27.286 ms
64 bytes from 216.35.19.179: icmp_seq=13 ttl=241 time=25.052 ms
64 bytes from 216.35.19.179: icmp_seq=14 ttl=241 time=25.918 ms
64 bytes from 216.35.19.179: icmp_seq=15 ttl=241 time=32.702 ms
64 bytes from 216.35.19.179: icmp_seq=16 ttl=241 time=37.229 ms
64 bytes from 216.35.19.179: icmp_seq=17 ttl=241 time=35.537 ms
64 bytes from 216.35.19.179: icmp_seq=18 ttl=241 time=29.943 ms
64 bytes from 216.35.19.179: icmp_seq=19 ttl=241 time=31.380 ms
64 bytes from 216.35.19.179: icmp_seq=20 ttl=241 time=26.326 ms
64 bytes from 216.35.19.179: icmp_seq=21 ttl=241 time=25.403 ms
64 bytes from 216.35.19.179: icmp_seq=22 ttl=241 time=26.719 ms
64 bytes from 216.35.19.179: icmp_seq=23 ttl=241 time=29.488 ms
64 bytes from 216.35.19.179: icmp_seq=24 ttl=241 time=29.223 ms
64 bytes from 216.35.19.179: icmp_seq=25 ttl=241 time=35.644 ms
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64 bytes from 216.35.19.179: icmp_seq=28 ttl=241 time=30.499 ms
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Which ports to open on FW for Voip

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