[asterisk-users] Maximum number of PRI calls on 1 asterisk box (no HW echo)

[Christian Victor]

Hi James,

we did sucessfully run two TE410P with 8xE1 in a decent Intel P4-3200
machine with quite heavy line usage. No codec conversion course.

I don't believe that there is a hard limit of E1s coded into Asterisk.
But the maximum lines you can squeeze out of your specific hardware
depends on so many factors (asterisk version, hardware etc).

Chris

2010/3/25 James Lamanna <jlamanna at gmail.com>:
> Hi,
> Does anyone have any good empirical data suggesting what the maximum
> number of PRI calls (incoming and outgoing)
> without hardware echo cancellation can be handled on a single box is?
> I have a TE410P T1 (1st gen) card and I'm seeing interesting errors of
> D-Channels going down and then coming back up (See below).
>
> I've looked at the number of simultaneous calls at each of these
> points, and each time the span seems to
> have around 21-23 calls, and the total number of calls ranges between 47 and 53.
> I'm trying to figure out if this is a load issue or an issue on the
> provider side, though my provider says they
> do not see any errors on any of the T1s.
> Could this be some sort of hardware interrupt problem? If so, how can I check?
>
> The specs of the machine are, Dual Xeon 2.80Ghz (both single core but w/HT)
> 4GB memory.
> Running asterisk 1.4.26.3 (32-bit)
> with libpri-1.4.7 and zaptel-1.4.12.9
>
> Thanks.
>
> -- James
>
> Please CC me on responses.
>
>
> [Mar 22 09:45:00] VERBOSE[8887] logger.c:   == Primary D-Channel on span 2 down
> [Mar 22 09:45:00] WARNING[8887] chan_dahdi.c: No D-channels available!
>  Using Primary channel 48 as D-channel anyway!
> [Mar 22 09:45:00] VERBOSE[8887] logger.c:   == Primary D-Channel on span 2 up
> [Mar 22 09:59:23] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 down
> [Mar 22 09:59:23] WARNING[8886] chan_dahdi.c: No D-channels available!
>  Using Primary channel 24 as D-channel anyway!
> [Mar 22 09:59:23] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 up
> [Mar 22 09:59:23] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 down
> [Mar 22 09:59:23] WARNING[8886] chan_dahdi.c: No D-channels available!
>  Using Primary channel 24 as D-channel anyway!
> [Mar 22 09:59:23] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 up
> [Mar 22 10:36:11] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 down
> [Mar 22 10:36:11] WARNING[8886] chan_dahdi.c: No D-channels available!
>  Using Primary channel 24 as D-channel anyway!
> [Mar 22 10:36:11] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 up
> [Mar 22 10:36:11] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 down
> [Mar 22 10:36:11] WARNING[8886] chan_dahdi.c: No D-channels available!
>  Using Primary channel 24 as D-channel anyway!
> [Mar 22 10:36:11] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 up
> [Mar 22 10:44:36] NOTICE[8888] chan_dahdi.c: PRI got event: HDLC Bad
> FCS (8) on Primary D-channel of span 3
> [Mar 22 10:45:44] NOTICE[8886] chan_dahdi.c: PRI got event: HDLC Bad
> FCS (8) on Primary D-channel of span 1
> [Mar 22 10:59:33] NOTICE[8887] chan_dahdi.c: PRI got event: HDLC Abort
> (6) on Primary D-channel of span 2
> [Mar 22 11:30:53] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 down
> [Mar 22 11:30:53] WARNING[8886] chan_dahdi.c: No D-channels available!
>  Using Primary channel 24 as D-channel anyway!
> [Mar 22 11:30:53] VERBOSE[8886] logger.c:   == Primary D-Channel on span 1 up
> [Mar 22 15:34:28] VERBOSE[8887] logger.c:   == Primary D-Channel on span 2 down
> [Mar 22 15:34:28] WARNING[8887] chan_dahdi.c: No D-channels available!
>  Using Primary channel 48 as D-channel anyway!
> [Mar 22 15:34:28] VERBOSE[8887] logger.c:   == Primary D-Channel on span 2 up
>
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> New to Asterisk? Join us for a live introductory webinar every Thurs:
>               http://www.asterisk.org/hello
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
>