[asterisk-ss7] number of sigchans on single linkset

Tue Mar 27 07:35:34 CDT 2012

yap.
here is my system.conf:

#
# Global data

loadzone        = us
defaultzone     = us

# Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" (MASTER) HDB3/CCS
span=1,1,0,ccs,hdb3
bchan=1-15,17-31
mtp2=16
echocanceller=mg2,1-15,17-31

# Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span 2" HDB3/CCS
span=2,2,0,ccs,hdb3
bchan=32-46,48-62
mtp2=47
echocanceller=mg2,32-46,48-62

# Span 3: TE4/0/3 "T4XXP (PCI) Card 0 Span 3" HDB3/CCS
span=3,3,0,ccs,hdb3
bchan=63-77,79-93
mtp2=78
echocanceller=mg2,63-77,79-93

# Span 4: TE4/0/4 "T4XXP (PCI) Card 0 Span 4" HDB3/CCS
span=4,4,0,ccs,hdb3
bchan=94-108,110-124
mtp2=109
echocanceller=mg2,94-108,110-124

# Span 5: TE4/1/1 "T4XXP (PCI) Card 1 Span 1" HDB3/CCS
span=5,5,0,ccs,hdb3
bchan=125-139,141-155
mtp2=140
echocanceller=mg2,125-139,141-155

# Span 6: TE4/1/2 "T4XXP (PCI) Card 1 Span 2" HDB3/CCS
span=6,6,0,ccs,hdb3
bchan=156-170,172-186
mtp2=171
echocanceller=mg2,156-170,172-186

# Span 7: TE4/1/3 "T4XXP (PCI) Card 1 Span 3" HDB3/CCS
span=7,7,0,ccs,hdb3
bchan=187-201,203-217
mtp2=202
echocanceller=mg2,187-201,203-217

# Span 8: TE4/1/4 "T4XXP (PCI) Card 1 Span 4" HDB3/CCS
span=8,8,0,ccs,hdb3
bchan=218-232,234-248
mtp2=233
echocanceller=mg2,218-232,234-248

--
regards,

abdul basit

On Tue, Mar 27, 2012 at 12:46 PM, Kaloyan Kovachev <kkovachev at varna.net>wrote:

> 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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