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 = 125-155This 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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