How to integrate Dahua intercom SIP version to other SIP servers.

[IT-man]

Hi
I am using VTH1550CH & VTO3211D-P2. both of them upgraded with SIP firmware successfully.
I could successfully register my extensions in the SIP server(ZYCOO U20) , but can not make calls .

I think it's codec problem , although I've already enabled the video stream codec(H.264) and audio codec.
Could you please help me

Soooooo manyyyyy thanksssss

 

[IT-man]

@nayr
@Kemar
@riogrande75
@int
@mifrey
@Antori91
@AlbertoIt

My friends please help me about this problem

 

[riogrande75]

Without a LAN trace (wireshark!) it's impossible to help.
Capture a full call setup, explain what you did and add a list of involved phone numbers+IP's.

 

[IT-man]

Without a LAN trace (wireshark!) it's impossible to help.
Capture a full call setup, explain what you did and add a list of involved phone numbers+IP's.

OK my friend
I'll trace it with wireshark and send it here