Prashant Dhonde
Vendor
Hi Guys, I have an setup of IP Office 11.1. and Grandstream open SIP Phones with latest firmware. I am facing issue with one way audio intercom and SIP trunk.
When i call from Phone 1 - 172.35.83.77 to Phone 2 - 172.35.85.203 or Phone 1 to Mobile No i am not able to hear on Phone 2 or Mobile. still able to hear from Phone 2 to Phone 1 or mob to phone 1.
I did some trace and found that call RTP are routed as below,
Phone 1 -- IP Office -- Undefined IP
172.35.83.77 --> 172.35.83.200 --> 172.35.85.98
Which need to be,
Phone 1 -- IP Office -- Phone 2
172.35.83.77 --> 172.35.83.200 --> 172.35.85.203
I am sharing the phone trace and SIP flow image can any one check the trace using wireshark and let me know who is misbehaving? Why the IP Office is sending RTP to another IP address rather than called phone IP. Only some phones has this issue and get resolved when phone takes another IP or assigned in static mode.
[URL unfurl="true"]https://res.cloudinary.com/engineering-com/raw/upload/v1677918295/tips/out.pcap_na1kwd.gz[/url]
When i call from Phone 1 - 172.35.83.77 to Phone 2 - 172.35.85.203 or Phone 1 to Mobile No i am not able to hear on Phone 2 or Mobile. still able to hear from Phone 2 to Phone 1 or mob to phone 1.
I did some trace and found that call RTP are routed as below,
Phone 1 -- IP Office -- Undefined IP
172.35.83.77 --> 172.35.83.200 --> 172.35.85.98
Which need to be,
Phone 1 -- IP Office -- Phone 2
172.35.83.77 --> 172.35.83.200 --> 172.35.85.203
I am sharing the phone trace and SIP flow image can any one check the trace using wireshark and let me know who is misbehaving? Why the IP Office is sending RTP to another IP address rather than called phone IP. Only some phones has this issue and get resolved when phone takes another IP or assigned in static mode.
[URL unfurl="true"]https://res.cloudinary.com/engineering-com/raw/upload/v1677918295/tips/out.pcap_na1kwd.gz[/url]