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IP Phone over SIP - SBS2003

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IP Phone over SIP - SBS2003 - 3.May2006 7:59:30 PM   
wnt

 

Posts: 5
Joined: 27.Dec.2005
Status: offline
Hi,
I have a problem with ISA server in SBS2003. I want to make a rules for IP Phone using SIP protocol (in LAN).

I create the rule named "SIP":
Primary:
5060-5061 UDP Send Receive
10000-20000 UDP Send Receive
NTP (UDP)
Secondary:
5060-5061 UDP Receive
10000-20000 UDP Receive

Directs:
All protected (with Localhost) -> External
External -> All protected (with Localhost)

When i boot up the phone, it works fine. A can make an out/ingoing call. But. After approximately 3-7 minutes
an ingoing calls failed. A receive a busy tone when I want make the call to this phone. :( I thing that the
problem is in NAT translating.. but I don`t know how setup it.

The phone is OEM YVK2000. (IP Phone 3). It supports NAT Traversal (Disabled/Enabled/STUN).
Now is the NAT-T set to "disabled"
In the past it works fine. Only W2k3 Server + ISA2004 instead of SBS2003 was used. I don`t know, if there are
any differences.

Thx for help.

Regards
Adamek Jiri
Post #: 1
RE: IP Phone over SIP - SBS2003 - 7.May2006 2:54:33 AM   
wnt

 

Posts: 5
Joined: 27.Dec.2005
Status: offline
nobody know? :(

(in reply to wnt)
Post #: 2
RE: IP Phone over SIP - SBS2003 - 25.May2006 12:21:59 PM   
Angelo Orlando

 

Posts: 7
Joined: 5.Dec.2002
From: ITALY
Status: offline
Unluckly you need to create under firewall policy
a rule like this:
ALLOWING to
UDP 5060-5061 Receive
from ANYWHERE
to IP ADDRESS OF YOU VOIP ADAPTER

This solve the issue receiving call in VOIP.

Let me know it it works for you.

(in reply to wnt)
Post #: 3

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