Hi all,
We've recently replaced a line going into one of our offices (FTTP), which came with a new identical Cisco router as before (Cisco ISR C1117). Since replacing it I have amended the NAT - External IP Address /FQDN to that of the new public WAN IP address and also amended the NAT fixed global IP address to the public WAN IP. I've contacted our SIP provider and provided them with our new public IP address which they have amended for Gamma on their side.
I have also added port forwarding which mirrored our previous config (UDP port 5060 from Internal IP of the PBX to Gamma's public WAN IP) and ports 6000 - 40000 for the DSP to another Gamma's public WAN IP that handles the call data and a few other specific ports. We've also disabled SIP ALG on the router
When doing test i.e calling the office number from the phone, the office phone does not appear to be ringing, however when I use the office phone to call my mobile number, my mobile phone rings, when I answer it, no audio is present, nor is the ringing tone on the office handset audible prior to answering it on my mobile phone. I've also noticed that If I call my mobile number from the office and I hung up before answering the call, my mobile phone continues to ring for a further 20 seconds before it stops
We've done packet trace and we can see data going from the pbx on port UDP 5060 to Gamma's public WAN IP when making a call from the office phone, however when we try to call the office, we cannot see any data coming into the router from Gamma's public IP addresses.
We've had our SIP provider contact Gamma with our test calls time and Gamma have stated they can see a 503 error when the calls are attempted which they believe is Firewall related.
I'm just confused as to how this can be when don't see any traffic from their public IP address hitting our Router.
Is there any other configuration that is needed to be amended as I am out of option.
We've recently replaced a line going into one of our offices (FTTP), which came with a new identical Cisco router as before (Cisco ISR C1117). Since replacing it I have amended the NAT - External IP Address /FQDN to that of the new public WAN IP address and also amended the NAT fixed global IP address to the public WAN IP. I've contacted our SIP provider and provided them with our new public IP address which they have amended for Gamma on their side.
I have also added port forwarding which mirrored our previous config (UDP port 5060 from Internal IP of the PBX to Gamma's public WAN IP) and ports 6000 - 40000 for the DSP to another Gamma's public WAN IP that handles the call data and a few other specific ports. We've also disabled SIP ALG on the router
When doing test i.e calling the office number from the phone, the office phone does not appear to be ringing, however when I use the office phone to call my mobile number, my mobile phone rings, when I answer it, no audio is present, nor is the ringing tone on the office handset audible prior to answering it on my mobile phone. I've also noticed that If I call my mobile number from the office and I hung up before answering the call, my mobile phone continues to ring for a further 20 seconds before it stops
We've done packet trace and we can see data going from the pbx on port UDP 5060 to Gamma's public WAN IP when making a call from the office phone, however when we try to call the office, we cannot see any data coming into the router from Gamma's public IP addresses.
We've had our SIP provider contact Gamma with our test calls time and Gamma have stated they can see a 503 error when the calls are attempted which they believe is Firewall related.
I'm just confused as to how this can be when don't see any traffic from their public IP address hitting our Router.
Is there any other configuration that is needed to be amended as I am out of option.
