[asterisk-ss7] ISUP over IP

[Vu Quang Hoa]

Dear Jean,
Voice TDM cards are much cheaper than SS7 card (due to sale volume - I
guess). One ISUP linkset (say several links) can handle up to 4096 TDM
channels.
One suggestion: Using sigtran & Media Gateway if you have to work with SS7.
Nowadays, using MediaGateway is cheaper and more stable, more feature than
integrate TDM card with server. If you do so, which you are involve in is IP
purely (SIP and Sigtran)

Good luck.

On Sat, Jul 3, 2010 at 10:56 PM, Jean Cérien <cerien.jean at gmail.com> wrote:

>
> Thanks
>
> I am missing something there !
>
> Sigtran has signalling over IP and media over TDM - then, you still need a
> TDM card for your voice - so you still need these expensive SS7 cards - or
> are there TDM cards that are not SS7, and cheaper ?
>
> Initially, I thought that Sigtran was full ip, which is wrong, but that
> appealed me as a way to avoid the ss7 cards - just one redundant NIC, and as
> you say, unlimited traffic - but I see we still need them ! I am lost
>
> J.
>
> On Sat, Jul 3, 2010 at 11:09 AM, Vu Quang Hoa <vutamhoan at gmail.com> wrote:
>
>> Hi,
>> From point of view of an system integrator:
>> - SS7 card is very expensive (thousand of $) in compare with NIC card (few
>> $)
>> - SS7 card licenses by links and limit traffic per card (2Mbps for 01 E1),
>> Sigtran is near unlimit (thinking of GE)
>> - Sigtran can be monitored simply with wireshark, that means cost saving,
>> easier for debugging, logging,...
>> .........
>> - Why don't we use IP signaling with a lot of advantages and much much
>> cheaper?
>>
>>
>>   On Sat, Jul 3, 2010 at 9:44 PM, Jean Cérien <cerien.jean at gmail.com>wrote:
>>
>>>
>>> Hi
>>>
>>> That is what I understood and I fail to see the interest of having the
>>> voice on one media (tdm) and signalling over IP - is it just to have one
>>> more TDM channel ? what's the benefit here ?
>>>
>>> Rgds,
>>>
>>> J.
>>>
>>> On Sat, Jul 3, 2010 at 10:35 AM, Vu Quang Hoa <vutamhoan at gmail.com>wrote:
>>>
>>>> No, media is transported over TDM as normal.
>>>>
>>>
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