[tongey]

Hi All
I am new here and new to the whole IP phone so please forgive this as I know very little about the subject

I have just installed & configured a Linksys SPA922 phone on my network.

I can make calls with no problem, however when I receive calls, the phone rings but when I pick it up I cannot hear anything and the caller does not hear anything either

Please help it must be something simple but just cannot get it to work

I have enabled port forwarding on my router both inbound & outbound, and setup the Stun server correctly. Any help would be appreciated.

[Imam]

You may try changing the RTP port range from 8000 instead of 16xxx . I had similar problem with my Linksys PAP2T.

Regards
IMAM

[boatman]

Originally Posted by tongey

I have enabled port forwarding on my router both inbound & outbound, and setup the Stun server correctly. Any help would be appreciated. :)

I am assuming that your SIP phone is behind a NAT router. If that is not true, let me know and I may modify my suggestions.

If port forwarding is not working for you, just remove it and do the following.

(under SIP tab)
Handle_VIA_received: yes
Handle_VIA_rport: yes
Insert_VIA_received: yes
Insert_VIA_rport: yes
Substitute_VIA_Addr: yes
Send_Resp_To_Src_Port: yes
STUN_Enable: yes
STUN_Test_Enable: yes
STUN_Server: stun.voxalot.com.au:3478 (or any STUN server such as 'stun01.sipphone.com:3478' or 'stun.sipgate.net:10000')
NAT_Keep_Alive_Intvl: 179

(under Line_1 and Line_2 (or PSTN_Line) tabs)
NAT_Mapping_Enable: yes
NAT_Keep_Alive_Enable: yes
NAT_Keep_Alive_Msg: (this should be blank in order to send small packets that do not cause proxy to reply)
NAT_Keep_Alive_Dest: $PROXY
Register Expires: 600

[tongey]

Originally Posted by boatman

I am assuming that your SIP phone is behind a NAT router. If that is not true, let me know and I may modify my suggestions.

If port forwarding is not working for you, just remove it and do the following.

(under SIP tab)
Handle_VIA_received: yes
Handle_VIA_rport: yes
Insert_VIA_received: yes
Insert_VIA_rport: yes
Substitute_VIA_Addr: yes
Send_Resp_To_Src_Port: yes
STUN_Enable: yes
STUN_Test_Enable: yes
STUN_Server: stun.voxalot.com.au:3478 (or any STUN server such as 'stun01.sipphone.com:3478' or 'stun.sipgate.net:10000')
NAT_Keep_Alive_Intvl: 179

(under Line_1 and Line_2 (or PSTN_Line) tabs)
NAT_Mapping_Enable: yes
NAT_Keep_Alive_Enable: yes
NAT_Keep_Alive_Msg: (this should be blank in order to send small packets that do not cause proxy to reply)
NAT_Keep_Alive_Dest:
Register Expires: 600

Thanks boatman, that worked great

I had a feeling it was the Handle VIA & Insert VIA options but I really do not know enough about it to experiment

Really appreciate your help, this forum is great

Best Regards

Tongey