[Serusers] Asterisk/Digium as PSTN gateway and SER as backend soft switch?
Hi, Has any one done using Asterisk/Digium T1 card as PSTN gateway, and SER as the backend soft switch? I am looking to install Asterisk boxes in a few cities to act as PSTN gateways and using SER to accept these calls. SER will have to communicate with other long distance carriers to allow world wide calling. Will this combination work? I like to know your comments or suggestions on this combination. thanks Tony Lum
On 18-04 00:36, Tony Lum wrote:
Hi,
Has any one done using Asterisk/Digium T1 card as PSTN gateway, and SER as the backend soft switch?
I am looking to install Asterisk boxes in a few cities to act as PSTN gateways and using SER to accept these calls. SER will have to communicate with other long distance carriers to allow world wide calling.
Will this combination work? I like to know your comments or suggestions on this combination.
Yes, it will work, there are several people running similar configurations either on this list or asterisk-users. Jan.
Hi Juha, Can you please elaborate the missing features? If we want to avoid buying the expensive cisco gw, what's the cheap PRI(T1) supported in sems? Thanks, Richard --- Juha Heinanen <jh@tutpro.com> wrote:
Tony Lum writes:
Has any one done using Asterisk/Digium T1 card as PSTN gateway, and SER as the backend soft switch?
yes, you can do it, but at this point asterisk lacks many important features that are present for example in cisco gws.
-- juha
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I don't think SER and SEMS supports any directly attached PRI cards. It is a SIP Proxy registrar, designed to deal with gateways (and Asterisk could be a gateway). However, I don't think that Asterisk makes a very cheap gateway. Once you factor in the cost of the card, the G.729 codec license, and a fast enough computer to do the coding (since the T1 card does not contain any DSPs), it doesn't seem so cheap anymore. And you'll end up with a gateway which doesn't support VAD/CNG or G.723 either. A used Cisco 2621 with a HDV card starts to look good. You get dedicated DSPs for coding, and support for a variety of different CODECs. Plus working VAD/CNG. Tom On Wed, 21 Apr 2004, Richard wrote:
Hi Juha,
Can you please elaborate the missing features? If we want to avoid buying the expensive cisco gw, what's the cheap PRI(T1) supported in sems?
Thanks, Richard
--- Juha Heinanen <jh@tutpro.com> wrote:
Tony Lum writes:
Has any one done using Asterisk/Digium T1 card as PSTN gateway, and SER as the backend soft switch?
yes, you can do it, but at this point asterisk lacks many important features that are present for example in cisco gws.
-- juha
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On 21-04 14:19, Tom wrote:
I don't think SER and SEMS supports any directly attached PRI cards. It is a SIP Proxy registrar, designed to deal with gateways (and Asterisk could be a gateway).
SEMS can act as an ISDN gateway, it supports directly attached PRI cards (Eicon Diva as en example).
However, I don't think that Asterisk makes a very cheap gateway. Once you factor in the cost of the card, the G.729 codec license, and a fast enough computer to do the coding (since the T1 card does not contain any DSPs), it doesn't seem so cheap anymore. And you'll end up with a gateway which doesn't support VAD/CNG or G.723 either. A used Cisco 2621 with a HDV card starts to look good. You get dedicated DSPs for coding, and support for a variety of different CODECs. Plus working VAD/CNG.
Jan.
On Thu, 22 Apr 2004, Jan Janak wrote:
On 21-04 14:19, Tom wrote:
I don't think SER and SEMS supports any directly attached PRI cards. It is a SIP Proxy registrar, designed to deal with gateways (and Asterisk could be a gateway).
SEMS can act as an ISDN gateway, it supports directly attached PRI cards (Eicon Diva as en example). ...
Do the Eicon Diva cards actually have a DSP on them? Does the DSP include the G.729 RTU license? Can they be purchased online anywhere? The Digium cards are known for their low cost, so the competition is much more expensive. Tom
Hi, On Friday 23 April 2004 10:25, Tom wrote:
Do the Eicon Diva cards actually have a DSP on them? Does the DSP include the G.729 RTU license? Can they be purchased online anywhere?
they sell cards with and without DSPs. I don't know about codec implementations for the DSP though. sems/isdngw does not use the DSPs in any way yet. Regards, Uli.
Richard writes:
Can you please elaborate the missing features?
the most important thing is that asterisk doesn't support remote-party-id that is a must for call forwarding and calling number privacy. a good pstn gw also allows controlling what to do with 3xx replies and refers. it is also desirable to be able to select which interface is used for signaling and which for media. some of these may be possible in asterisk, but i'm not sure. one advantage of asterisk over cisco is that * has support for free low bit rate codecs ilbc and speex.
If we want to avoid buying the expensive cisco gw, what's the cheap PRI(T1) supported in sems?
jan already answered that sems currently supports. nothing would prevent adding into sems also support for digium te405p/te410p, which i consider a good thing to do. -- juha
nothing would prevent adding into sems also support for digium te405p/te410p, which i consider a good thing to do.
That would be something really good for someone who doesn't want to spend big money up front. Anyone knows if this be on the roadmap? Richard __________________________________ Do you Yahoo!? Yahoo! Photos: High-quality 4x6 digital prints for 25� http://photos.yahoo.com/ph/print_splash
Hello, a TE410P has already been ordered. sems/isdngw will probably support it very soon. Regards, Uli. On Thursday 22 April 2004 12:44, Richard wrote:
nothing would prevent adding into sems also support for digium te405p/te410p, which i consider a good thing to do.
That would be something really good for someone who doesn't want to spend big money up front. Anyone knows if this be on the roadmap?
Richard
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Hi! Any news on this? Btw: I remember there was a hompage which showed all the supported/tested ISDN cards. Is this page still available? I can't find (google too). regards, klaus Ulrich Abend wrote:
Hello,
a TE410P has already been ordered. sems/isdngw will probably support it very soon.
Regards,
Uli.
On Thursday 22 April 2004 12:44, Richard wrote:
nothing would prevent adding into sems also support for digium te405p/te410p, which i consider a good thing to do.
That would be something really good for someone who doesn't want to spend big money up front. Anyone knows if this be on the roadmap?
Klaus, See www.iptel.org/isdngw/controllers.html Regards, Lambros
Hi!
Any news on this?
Btw: I remember there was a hompage which showed all the supported/tested ISDN cards. Is this page still available? I can't find (google too).
regards, klaus
Ulrich Abend wrote:
Hello,
a TE410P has already been ordered. sems/isdngw will probably support it very soon.
Regards,
Uli.
On Thursday 22 April 2004 12:44, Richard wrote:
nothing would prevent adding into sems also support for digium te405p/te410p, which i consider a good thing to do.
That would be something really good for someone who doesn't want to spend big money up front. Anyone knows if this be on the roadmap?
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As far as I can remember the drivers for the card do not support any standard API (isdn4linux, capi), Uli was talking to Digium guys and it looks like the only way how to make the card work is using asterisk. Jan. On 29-06 15:26, Klaus Darilion wrote:
Hi!
Any news on this?
Btw: I remember there was a hompage which showed all the supported/tested ISDN cards. Is this page still available? I can't find (google too).
regards, klaus
Ulrich Abend wrote:
Hello,
a TE410P has already been ordered. sems/isdngw will probably support it very soon.
Regards,
Uli.
On Thursday 22 April 2004 12:44, Richard wrote:
nothing would prevent adding into sems also support for digium te405p/te410p, which i consider a good thing to do.
That would be something really good for someone who doesn't want to spend big money up front. Anyone knows if this be on the roadmap?
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I'm using ser together with asterisk my setup is quite the opposite - ser accepts calls from sip clients and passes them to asterisk. Asterisk then terminates the calls to pstn via E1 lines. works without problems + asterisk has lots of advanced voice options. Dave -----Original Message----- From: serusers-bounces@iptel.org [mailto:serusers-bounces@lists.iptel.org]On Behalf Of Tony Lum Sent: Sunday, April 18, 2004 9:37 AM To: serusers@lists.iptel.org Subject: [Serusers] Asterisk/Digium as PSTN gateway and SER as backend softswitch? Hi, Has any one done using Asterisk/Digium T1 card as PSTN gateway, and SER as the backend soft switch? I am looking to install Asterisk boxes in a few cities to act as PSTN gateways and using SER to accept these calls. SER will have to communicate with other long distance carriers to allow world wide calling. Will this combination work? I like to know your comments or suggestions on this combination. thanks Tony Lum _______________________________________________ Serusers mailing list serusers@lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers
participants (9)
-
Dawid Mielnik -
Jan Janak -
Juha Heinanen -
Klaus Darilion -
Lambros Lambrinos -
Richard -
Tom -
Tony Lum -
Ulrich Abend