[asterisk-ss7] number of sigchans on single linkset
Kaloyan Kovachev
kkovachev at varna.net
Tue Mar 27 02:46:37 CDT 2012
Hi,
On Mon, 26 Mar 2012 20:18:48 +0500, Abdul Basit <basit.engg at gmail.com>
wrote:
> I recompiled libss7 and asterisk with
>
> libss7-1.0.2/ss7_internal.h:#define SS7_MAX_LINKS 16
>
> asterisk-1.6.2.10/channels/chan_dahdi.c:#define NUM_DCHANS 16
>
> But as soon as i add 5th link, i get error
>
> Command 'module load chan_dahdi.so' failed.
> [Mar 21 16:25:28] ERROR[10641]: chan_dahdi.c:15568 linkset_addsigchan:
> Unable to open SS7 sigchan 140 (No such device or address)
have you (re)defined it in system.conf or it is still commented out?
>
> While with 4 signalling links its perfect.
>
> [Mar 21 16:46:05] Loaded chan_dahdi.so => (DAHDI Telephony Driver
w/SS7)
> *CLI> [Mar 21 16:46:05] MTP2 link up (SLC 0)
> [Mar 21 16:46:05] MTP2 link up (SLC 1)
> [Mar 21 16:46:05] --- SS7 Up ---
> [Mar 21 16:46:05] Resetting CICs 1 to 15
> [Mar 21 16:46:05] Resetting CICs 17 to 31
> [Mar 21 16:46:05] Resetting CICs 33 to 47
> [Mar 21 16:46:05] Resetting CICs 49 to 63
> [Mar 21 16:46:05] Resetting CICs 65 to 79
> [Mar 21 16:46:05] Resetting CICs 81 to 95
> [Mar 21 16:46:05] Resetting CICs 97 to 111
> [Mar 21 16:46:05] Resetting CICs 113 to 127
> [Mar 21 16:46:05] Resetting CICs 129 to 143
> [Mar 21 16:46:05] Resetting CICs 145 to 159
> [Mar 21 16:46:05] Resetting CICs 161 to 175
> [Mar 21 16:46:05] Resetting CICs 177 to 191
> [Mar 21 16:46:05] Resetting CICs 193 to 207
> [Mar 21 16:46:05] Resetting CICs 209 to 223
> [Mar 21 16:46:05] Resetting CICs 225 to 239
> [Mar 21 16:46:05] Resetting CICs 241 to 255
> [Mar 21 16:46:06] MTP2 link up (SLC 3)
> [Mar 21 16:46:06] MTP2 link up (SLC 2)
>
> Checking with my provider. Will update after coordination.
>
> --
>
> regards,
>
> Abdul Basit
>
>
>
> On Mon, Mar 19, 2012 at 12:16 AM, Kaloyan Kovachev
> <kkovachev at varna.net>wrote:
>
>> Not sure about SIG_SS7_NUM_DCHANS, but i am using SS7_MAX_LINKS and
>> SS7_MAX_ADJSPS = 8 (with 6 links actually) for over 3 years without a
>> problem and as the max SLC is 4 bit it seems right to have 16 as the
>> hardcodded maximum
>>
>> On Sun, 18 Mar 2012 22:54:20 +0500, Abdul Basit <basit.engg at gmail.com>
>> wrote:
>> > Kaloyan,
>> >
>> > Thank you for suggestion.
>> > I will update and recompile asterisk. Will get back with results.
>> >
>> > --
>> > regards,
>> >
>> > Abdul Basit
>> >
>> >
>> >
>> > On Sat, Mar 17, 2012 at 12:47 PM, Kaloyan Kovachev
>> > <kkovachev at varna.net>wrote:
>> >
>> >> On Fri, 16 Mar 2012 23:25:40 +0500, Abdul Basit
<basit.engg at gmail.com>
>> >> wrote:
>> >> > This is production machine. I found it as stable one and working
>> >> > fine
>> >> with
>> >> > me.
>> >> > Moreover, I tested with latest asterisk 1.6.2.23 but this is not
>> >> > solving
>> >> > slc problem.
>> >> >
>> >> > If someone has better idea/suggestion thanks in advance.
>> >>
>> >> There are few hardcoded limits:
>> >> in libss7
>> >> ss7_internal.h SS7_MAX_LINKS 4
>> >> ss7_internal.h SS7_MAX_ADJSPS 4
>> >>
>> >> in Asterisk 1.8 and up to trunk
>> >> sig_ss7.h SIG_SS7_MAX_CHANNELS 672 (which is 1 DS3 = 28 T1
or
>> >> about 22 E1)
>> >> which is equal to MAX_CHANNELS in older versions
>> >> sig_ss7.h SIG_SS7_NUM_DCHANS 4 (in older versions is
just
>> >> NUM_DCHANS)
>> >>
>> >> also NUM_SPANS = 32 unless you have compiled asterisk with the 'lots
>> >> of
>> >> spans' option in which case it is 128
>> >>
>> >> in short upgrading will not solve your problem - you should change
the
>> >> hardcoded value and recompile.
>> >> In my opinion it is safe to increase them all from 4 to 16 (links,
>> adjspc
>> >> and dchans)
>> >>
>> >> >
>> >> > --
>> >> > regards,
>> >> >
>> >> > Abdul Basit
>> >> >
>> >> >
>> >> >
>> >> > On Fri, Mar 16, 2012 at 8:54 PM, Kevin P. Fleming
>> >> > <kpfleming at digium.com>wrote:
>> >> >
>> >> >> On 03/16/2012 08:52 AM, Abdul Basit wrote:
>> >> >>
>> >> >>> While browsing through the code in
>> >> >>>
>> >> >>> asterisk-1.6.2.10/channels/**chan_dahdi.c
>> >> >>>
>> >> >>
>> >> >> Why are you using such an old version of Asterisk?
>> >> >>
>> >> >> --
>> >> >> Kevin P. Fleming
>> >> >> Digium, Inc. | Director of Software Technologies
>> >> >> Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype:
>> >> >> kpfleming
>> >> >> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
>> >> >> Check us out at www.digium.com & www.asterisk.org
>> >> >>
>> >> >>
>> >> >> --
>> >> >>
>> >>
>>
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>> >>
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