Setting up VoIP

hi all,
there are 2 locations, SiteA and SiteB connected point 2 point via Satellite connection. both the ends have cisco 1700 router with FXS voice cards respectively. i have connected both the ends with a handset and trying to call from one end, but i can only hear the other party's voice but they cannot hear from my location. what could be the problem.
the config looks like this :
RouterA :
voice-port 2/0
voice-port 2/1
dial-peer voice 1 pots
destination-pattern 411
port 2/0
dial-peer voice 3 voip
destination-pattern 700
codec g711ulaw
ip precedence 5
session target ipv4:192.168.10.1
dial-peer voice 4 voip
destination-pattern 701
ip precedence 5
session target ipv4:192.168.10.1
RouterB :
voice-port 2/0
voice-port 2/1
dial-peer voice 1 pots
destination-pattern 700
port 2/0
dial-peer voice 2 pots
destination-pattern 701
port 2/1
dial-peer voice 3 voip
destination-pattern 411
codec g711ulaw
ip precedence 5
session target ipv4:10.0.0.116
dial-peer voice 4 voip
destination-pattern 411
ip precedence 5
session target ipv4:10.0.0.116
thanks in advance.
regards
Faiz

Assuming there are no devices in between running ACLs or firewalls etc:
There are many possible causes for this - a popular one is not enabling ip routing, but this is necessary for voice... just bash in
ip routing
in global mode.
For other possible solutions this is a good document:
http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a008009484b.shtml
Regards
Aaron
please rate my post...

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Thanks Scott
Date/Time: 2007-09-26 19:35:24.528 -0400
OS Version: 10.4.10 (Build 8R2218)
Report Version: 4
iChat Connection Log:
AVChat started with ID 3193720808.
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rustymacklin12: State change from AVChatNoState to AVChatStateInvited.
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@:0 type=4 (00000000/22)
[VCSIP_INVITEERROR]
[19]
@SIP/SIP.c:2448 type=4 (900A0015/22)
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@SIP/SIP.c:2448 type=4 (900A0015/22)
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@SIP/SIP.c:2448 type=4 (900A0015/22)
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Message was edited by: Rusty68

Hi Rusty,
Error 8 has always been there since iChat 2.x (Although it is not until the error logs pop was introduced to 10.4.7 that it actually had a name for us users).
As to whose fault it is, is many and varied.
As the Article you link to says iChat uses the SIP (Session Initiation Protocol) as Apple has said iChat is a VoIP app and all VoIP use SIP.
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Remember that if set Port Forwarding and kept your Modem or router doing DHCP then the IP your computer gets from that DHCP server could also have changed.
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MOdem with Static routing <-> ROuter in bridge or Static <-> computer
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Router doing DHCP
giving a computer two IPs
I have shown it this way to demonstrate more visually the overlapping.
Yes, it is fair to say that iChat has trouble with NAT, but it is mostly about how the LAN is set up, which can include using Wireless and Ethernet at the same time. IT is also true that many on-line games will have the same trouble.
Yes, Apple also run the SIP server that iChat connects to which handles ALL A/V chats and it could lose contact with the AIM servers or the AIM servers with it and lose the ability to contact the AIM screen names.
So in summary.
Could be your LAN and any setting (Except UPnP) used with a DHCP server.
Could be your ISP changing your Internet Service for their VoIP service.
Partly it is Apple for choosing the International SIP Standard
Partly it is due to the myriad ways modem and router manufacturers construct their firmware.
More specifically;
Without you "changing Anything" it can be your OWN DHCP server.
IT could be your ISP.
We have yet to touched on features on modems and routers that see the amount of Data iChat can send as an Attack on your connection and end the chat.
9:11 PM Sunday; September 30, 2007

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no thats no what i thinking about... i dont want to connect any devices as handsets ect to my laptop, laptop must be free as is now if this router have VOIP in the lastest firmware i think i can connect router to my bt broadband line then standard handset to the router and thats it. From the router level set the voip softphone internet telephony connection for this handset and thats it.... then if I will need another standard landline handset then simply connect it straight to the bt line... thats my vision....no devices connected to my computer its not working that way
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