[Asterisk-Users] DSLink modem freeze

[Eric Wieling aka ManxPower]

The device may also be doing RTP fixup, I guess.  SIP uses RTP for the 
audio.

Rodrigo P. Telles wrote:
> Hi Eric,
> 
> Thanks every body that answered about this problem.
> About change de default SIP port (5060), I tried it at first and the UAC
> could authenticate but when I made a call and another side pick the 
> phone up
> DSLink 200E freeze again.
> ie. there wasn't any port 5060 on transactions.
> I will have this DSL modem on my LAB asap and I will give feedback to 
> the list.
> 
> Thanks
> 
> Eric Wieling aka ManxPower escreveu:
> 
>>
>> On Cisco routers you can do something like "no nat sip fixup 5060" and 
>> that will disable only the special SIP related nat features, but leave 
>> in all of the other NAT features.  If a vendor does not include a 
>> similar ability in their SIP aware router they should be shot.
>>
>> --Eric
>>
>> C F wrote:
>>
>>> I have this problem with Best Data DSL Modems, If I disable NAT (on
>>> the router, not in SIP) it works fine. You might be able to do the
>>> same just disable NAT and it will work, if you disable NAT then you
>>> will have to get a different router to be able to share the same IP,
>>> and if you use PPPoE you might not be able to do it, in which case you
>>> will have to get a different DSL modem.
>>>
>>>
>>> On Wed, 29 Dec 2004 20:00:28 -0600, Eric Wieling aka ManxPower
>>> <eric at fnords.org> wrote:
>>>
>>>> Rodrigo P. Telles wrote:
>>>>
>>>>> Hi Folks,
>>>>>
>>>>> I've been having troubles with a DSL router (DSLink 200E) and SIP 
>>>>> phones.
>>>>> When I put any SIP phone (software or hardware) to work behind
>>>>> that DSL router, it completely freeze.
>>>>> I ready tech specs of that DSL router and it says that SIP protocol is
>>>>> supported.
>>>>> ie. I tested two DSLink 200E with the same results.
>>>>
>>>>
>>>>
>>>> Turn off SIP support and let the generic NAT deal with it.