Any experience with Grandstream VoIP equipment ?

Mon Feb 11 21:22:41 UTC 2013

John Levine wrote:
>> As another reference point, I really liked the sipura atas, they were my
>> personal favorite as far as the gear we used. I don't know how well that
>> translates to after the linksys takeover though, as I haven't done voice
>> gear in a few years.
> 
> Got a Sipura SPA-1001, can't get it to work, similar issues.
> 
> I found that my router had SIP ALG turned on, turned it off,
> now the Grandstream mostly works.  Sigh.  Didn't help the
> Sipura, though.

If behind NAT: On the sipura/linksys ATA, admin login, switch to
advanced view, SIP tab. Ensure the following "NAT Support Parameters"
are enabled.
Handle VIA received, Handle VIA report, Insert VIA received, Insert VIA
rport, Substitute VIA Addr, Send Resp To Src Port. I never use a STUN
server, I've found it causes too much delay in answering a call.

It might be in a slightly different place than described above on the
newer SPA-1001/112, but the options are the same.