PRI Span goes down under heavy call load

Hi,

I want to upgrade my asterisk, libpri and dahdi package. can anyone tell what is the latest 1.6.x stable combination of these?

I am currently using asterisk-1.4.24.1, asterisk-addons-1.4.7, libpri-1.4.10, zaptel-1.4.12.1 on Centos-5.xx for my IVR server connected to E1 lines through Digium TE412P. But this version is not stable at all. it gives off errors when call traffic increases more that 15 at the same time.

it gives off pri errors like below


[Sep 28 12:44:06] WARNING[9334]: chan_dahdi.c:5207 dahdi_read: Unable to set channel 74 (index 0) to companded mode.
[Sep 28 12:44:06] WARNING[9334]: chan_dahdi.c:5433 dahdi_write: Unable to set linear mode on channel 74
[Sep 28 12:44:06] WARNING[9334]: chan_dahdi.c:5207 dahdi_read: Unable to set channel 74 (index 0) to companded mode.
[Sep 28 12:44:06] WARNING[9334]: chan_dahdi.c:5433 dahdi_write: Unable to set linear mode on channel 74
[Sep 28 12:44:06] WARNING[9334]: chan_dahdi.c:5207 dahdi_read: Unable to set channel 74 (index 0) to companded mode.

[Sep 28 12:48:52] ERROR[7766]: chan_dahdi.c:8735 dahdi_pri_error: !! Not good - head of queue has not been transmitted yet

– Moving call from channel 5 to channel 11
[Sep 28 12:55:47] WARNING[7766]: chan_dahdi.c:8558 pri_fixup_principle: Can’t fix up channel from 5 to 11 because 11 is already in use

[Sep 28 13:46:00] ERROR[20291]: chan_dahdi.c:8735 dahdi_pri_error: Write to 53 failed: Unknown error 500
[Sep 28 13:46:00] ERROR[20291]: chan_dahdi.c:8735 dahdi_pri_error: Short write: 0/15 (Unknown error 500)
[Sep 28 13:46:00] NOTICE[20291]: chan_dahdi.c:9028 pri_dchannel: PRI got event: HDLC Abort (6) on Primary D-channel of span 1

[Sep 29 19:06:37] ERROR[28106]: chan_dahdi.c:8735 dahdi_pri_error: ACK received for ‘0’ outside of window of ‘71’ to ‘103’, restarting
== Primary D-Channel on span 1 down
[Sep 29 19:06:37] WARNING[28106]: chan_dahdi.c:2789 pri_find_dchan: No D-channels available! Using Primary channel 16 as D-channel anyway!


most of the time D channel goes down and drops all the calls on that span. also i have compiled zaptel but errors show chan_dahdi being used. strange…

i tried installing dahdi-linux-complete-2.1.0.4+2.1.0.2 but then pri does not receive calls at all.

please help.

Hello,

Please contact our Support department directly for assistance in troubleshooting this issue. Details for contact are available here:

digium.com/support

Cheers