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-   -   Siemens C475 IP phone setup (http://forum.sipbroker.com/showthread.php?t=4105)

docknden1 06-20-2009 06:27 AM

Siemens C475 IP phone setup
Hi Everyone,

I have recently bought a new siemens C475 IP phone on the setup page i have set the voxalot account it to which it registers but unfortunately i have to specify the OUTBOUND proxy server in order for the calls to take place and whenever i remove it the calls do not go through further the giganet to giganet calls cannot take place when the OUTBOUND proxy is place.

I do not have any issue with PORT 5060 since i am using a CISCO ATA 186 with the default port and there i do not use the OUTBOUND proxy.

I would be glad if anyone could shed more light on the issue.

Thanks in Advance

docknden1 06-20-2009 06:32 PM

Any solutions please

emoci 06-20-2009 08:34 PM

Could explain a bit more what you mean by "giganet to giganet calls"?

Are you trying to call ATAs in between each other...?

docknden1 06-21-2009 07:31 AM

Could explain a bit more what you mean by "giganet to giganet calls"?

Are you trying to call ATAs in between each other...?


Calls betweens two persons having a gigaset ip phone is called as giganet to giganet calls these calls are free.

No i am not trying to call any ATA in between them, i had just mentioned about the ATA's because the VOXALOT to VOXALOT calls are working without putting the OUTBOUND proxy unlike the siemens C475 IP phone where i have to mention the OUTBOUND for the VOXALOT to VOXALOT calls.

Thanks in Advance.

docknden1 06-22-2009 09:27 AM

Any update please

boatman 06-22-2009 03:33 PM


Originally Posted by docknden1 (Post 23634)
I have recently bought a new siemens C475 IP phone

Is this the Gigaset C475 IP that can handle 6 VoIP accounts, and use of multiple providers is possible? If so, can you use outbound proxy for some providers but not for all providers?

Which providers have you configured? I'm guessing you've configure at least two; Voxalot, and a proxy for the Gigaset to Gigaset calls.

green 06-22-2009 06:57 PM

"giganet" is gigaset.net, VoIP with Gigaset.net from Siemens Gigaset
Yes, it is possible to specify Outbound Proxy separately for each account. Gigaset phones are working just fine (with voxalot as well) without using outbound proxy.

Depending on the NAT device involved into this setup it may be necessary to configure Gigaset to use a local SIP port different from 5060 or use a random port (may be found at Settings - Telephony - Advanced settings).

docknden1 06-23-2009 02:20 PM

Hi Everyone,

Thanks for the input

1) My setup is as follows


2) I have configured one account on my siemens C475 IP phone with voxalot as provider on port 5060
and here if i do not speciy a OUTBOUND PROXY the calls are not getting through voxalot.

3) Should i configure the gigaset to port other that 5060 for the voxalot account
or should i configure to a port other than 5060 for the gigaset.net calls and if so how could i do it.

I would be glad if you could upload screenshot of your setup Mr. Green

Thanks in Advance

green 06-23-2009 02:37 PM

We can only guess and try.
The right way to solve such issues is to either check the SIP signaling locally or have it done by the provider (voxalot in this case).

How your router is behaving in terms of NAT (port number preserved or random?) & SIP (SIP "support", SIP ALG) ?

Do you have your ATA connected to Voxalot at the same time? Have you tried to remove it and reboot the router then Gigaset?

How you see your Device Registrations on voxalot site?

Are you using STUN in Gigaset?

Have you tried to use a softphone instead of Gigaset with exactly the same settings?

As I noticed from your previous posts you're using non-standard ports. In this case I suppose you have to use an Outbound Proxy. As it was mentioned before you can enable OB proxy on per-account basis.

docknden1 07-06-2009 09:22 PM

Hi Everyone,

I managed to run my siemens C475 IP without the OUTBOUND proxy but unfortunately still have problems with gigaset.net to giagaset.net call whenever i try to call a gigaset.net number i get a specific beep for a while and the call does not connect at all.

I am able to make calls through voxalot sucessfully without any hitches would be glad if any one could shed light on how to get the gigaset.net to gigaset.net call through.

Thanks in advance.

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