[asterisk-ss7] some observations

[Mitul Limbani]

Hey Markus,

Well a very tricky question to answer, but to me if the stuff is  
hampering the business / direct cash, then it's high time to go with  
some commercial solution, nevertheless if time permits you can also  
check with chan_ss7 too.

Let me know in either case,

Thanks & Regards,
Mitul Limbani,
Founder & CEO,
Enterux Solutions Pvt. Ltd.,
The Enterprise Linux Company (r),
http://www.enterux.com
http://www.entVoice.com

On 26-Sep-2009, at 11:42 AM, Markus A. Wipfler <markus at infocom.co.ug>  
wrote:

> Hi,
>
> I have set up a number of asterisk / libss7 /dahdi boxes. One of my  
> more interesting setups is below (using 2 Sangoma A104d cards). I  
> ended up with this after the teleclom shifted locations and added  
> additional Media Gateways and MSS:
>
>
> ### WAN port mappings
>
> wanpipe1 (1st port on 1st sangoma crard) maps to SPAN 1 (system.conf)
> wanpipe3 (3rd port 1st card ) => SPAN 2
> wanpipe6 (2nd port 2nd card) maps to SPAN 3
> wanpipe5 (1st prot 2nd card) maps to SPAN 4
> wanpipe2 (2nd port 1st card) maps to SPAN 5
>
>
> ###  system.conf
>
> span=1,0,0,ccs,hdb3
> bchan=2-31
> dchan=1
> span=2,0,0,ccs,hdb3
> bchan=32-62
> span=3,0,0,ccs,hdb3
> bchan=63-93
> span=4,0,0,ccs,hdb3
> bchan=95-124
> dchan=94
> span=5,0,0,ccs,hdb3
> bchan=125-155
>
>
> ###  chan_dahdi.conf
>
> linkset = 1
> group=3
> context = from-blabla
> signalling=ss7
> ss7type = itu
> networkindicator = national_spare
> pointcode = ZZZ
> ;;; MGW1 AAA /MSS1 BBB
> adjpointcode = AAA
> defaultdpc = BBB
> sigchan = 1
> cicbeginswith = 2
> channel = 2-31
> cicbeginswith = 33
> channel = 32-62
> cicbeginswith = 65
> channel = 63-93
> ;;; MGW3 CCC /MSS4 DDD
> adjpointcode = CCC
> defaultdpc = DDD
> sigchan = 94
> cicbeginswith = 2
> channel = 95-124
> cicbeginswith = 33
> channel = 125-155
>
>
>
> This setup has been working fine for me. However there some issues  
> that have been buggin me:
>
> Every once in  a while weird things start happening such as: no  
> audio on an answered call, or a wrong number is dialed. This is when  
> I usually restart asterisk and the sangoma driver (wanrouter). I  
> usually have to do this once in a week but I am hesitant to add a  
> cron job to do this. I have also noticed that if i don't bring up  
> the ports (wanpipe[13652]) in the correct order, I get issues such  
> as asterisk dropping calls if they reach say 63 active calls.  When  
> I fire up the wanports in the correct order, in my case 1,3,6,5,2  
> and then start asterisk, everything works fine and i can do 150+  
> concurrent calls, until about 1 week to 10 days later when I start  
> getting issues again.
> I have also noticed that asterisk doesn't  seem to be able to  
> correctly respond to Group Block / Release messages.
>
> My question is, is it time for me to start looking for a commercial  
> solution? In our country we have finally gotten connected to the  
> Internet via a submarine fiber cable reducing round trip times  from  
> ca 700 ms to below 200 ms. We also have way more affordable  
> bandwidth available to us. All this really boosted our VoIP traffic  
> and I am not sure that my solution based on OSS can scale well with  
> the high increasing demand. So am wondering if it is now time to  
> join the dark side and start considering "black boxes"?
>
>
> Regards
>
> --
> Markus
>
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