Cisco IP phone is not registering to server

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Cisco IP phone is not registering to server

L2 Linker

Hi all,

I have Palo alto in my network connected to CISCO Call manager server and Cisco DX650 IP phone. I am facing issue that DX 650 is not registering to Call manager server when I capture log I found that the traffic comming from Call manager server and IP phone into Firewall is completing TCP connection but when outgoing traffic from firewall towards Call manager server and IP Phones is sending TCP (RST/ACK) message. I also have cisco 8811 IP phone which got registered so please help me with this

16 REPLIES 16

I will share you once get solved

The phone got registered it's working fine. I allowed WEB BROWSING, SIP, SSL, TFTP and SERVICE: TCP 6950, TCP 8443, TCP 6970, TCP 2445, TCP/UDP 5060

Thank you for your assistance

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