SIP settings for external usage.
Bookmark this page:
 Yahoo!
 Google
 Windows Live
 del.icio.us
 digg
 Netscape
|
|
|||||||||||||
|
Posted by chamberlain.anthony@gmail.com on August 23, 2007, 9:08 am
Please log in for more thread options Hello. We have a LAN connected to a WAN and we are using 7960 SIP Phones. For privacy purposes I want to protect our actual IP so I will refer to our addresses as W.Y.Y.n (n will be an actual number). These means we have network W.X.Y and n is the different IP addresses. As a matter of fact, when I refer to IP address n I actually will mean W.X.Y.n And we actually have netmask 255.255.255.248 which limits us to 7 addresses. The WAN shows IP address W.X.Y.142 with a peer of W.X.Z.254 (Z != Y) The LAN shows IP address of W.X.Y.137 This gives us 138-141 to use as IP addresses for the SIP phone, terminals, etc. As an experiment, I tried all the addresses from 138 to 141 with a terminal. I SSHed into the machine where our SIP proxy is, and did a who. No matter what the terminal address was, the who always showed us as coming from W.X.Y.142. So say, for instance, we make the SIP address 138. The invitation will come from 138, but the machine thinks it is 142, so SIP calls won't work. Any idea how to make the actual IP address match the viewed IP address? Oh, the router in the sip phone is set to 42 | |||||||||||||
|
Posted by Someone on August 24, 2007, 6:20 pm
Please log in for more thread options Looks like you're using NAT. You should be using Cone NAT in your router. I prefer Port Restricted Cone NAT for this. The one thing you need to think about is an Application Layer Gateway. SIP has addressing deep in their headers such as the transport or SDP addressing and ports that may need to be considered. | |||||||||||||
| Similar Threads | Posted |
| SIP settings for external usage. | August 23, 2007, 9:08 am |
| What's typical "free" usage on a landline? | November 6, 2004, 6:08 pm |
| Non standard usage of X100P card with Asterisk. | July 30, 2004, 5:29 am |
| internal - external | March 8, 2007, 1:10 pm |
| Axon and external (?) lines | September 12, 2006, 3:23 pm |
| cisco callmanager 4.0 with external gateway | August 1, 2004, 6:12 pm |
| Howto: Connect Cisco CallManager Express to external SIP provider? | October 27, 2004, 3:57 pm |
| SIP Settings Callserve | September 22, 2004, 11:38 am |
| BABYtel Asterisk settings | December 7, 2004, 1:46 pm |
| Broadvoice SIP settings for Sipura AP | January 23, 2005, 12:31 am |
| SIP software phone and firewall settings | January 5, 2006, 8:30 pm |
| Netopia R5300 T1 - Any QOS Settings or Priority Queing | February 3, 2005, 3:06 am |
| High latency connection - sugestions 4 VoIP service(s)/settings?? | March 11, 2006, 1:07 pm |
> Phones. For privacy purposes I want to protect our actual IP so I will
> refer to our addresses as W.Y.Y.n (n will be an actual number). These
> means we have network W.X.Y and n is the different IP addresses. As a
> matter of fact, when I refer to IP address n I actually will mean
> W.X.Y.n And we actually have netmask 255.255.255.248 which limits us
> to 7 addresses. The WAN shows IP address W.X.Y.142 with a peer of
> W.X.Z.254 (Z != Y) The LAN shows IP address of W.X.Y.137 This gives us
> 138-141 to use as IP addresses for the SIP phone, terminals, etc. As
> an experiment, I tried all the addresses from 138 to 141 with a
> terminal. I SSHed into the machine where our SIP proxy is, and did a
> who. No matter what the terminal address was, the who always showed us
> as coming from W.X.Y.142. So say, for instance, we make the SIP
> address 138. The invitation will come from 138, but the machine thinks
> it is 142, so SIP calls won't work. Any idea how to make the actual IP
> address match the viewed IP address?
>
> Oh, the router in the sip phone is set to 42
>