Chris Miller
2006-Feb-28 10:45 UTC
[Asterisk-Users] Sound quality issue in one direction and wctdm problem with APIC enabled kernel
I'm chasing down a pop/click type of disturbance on a PBX system. Strangely, the disturbance is only heard by the outside caller, the internal recipient hears the caller crystal clear. This seems to have crept up when upgrading the zaptel driver to the 1.2 series while running 1.0.10. I went ahead and upgraded the entire system to 1.2.4. The system is a ~2Ghz AMD 32bit system, with 512MB of memory and nothing other than Asterisk running. Phone traffic is minimal, perhaps 3 simultaneous calls max, but the problem occurs with just one call. It's located in a data center with ~20ms pings to the ITSP and ~20ms pings to the remote office IP phones. Up to this point, ztdummy was in use without problems, although the timing (zttest) was a hair under the recommended threshold. I dropped in a TDM400P for testing, and although the timing improved, the symptom remained. The system has an IDE drive, and I verified the hdparm dma/irq settings were enabled. The TDM card was sharing interrupts, so I recompiled the kernel with APIC support. Unfortunately the wctdm module will no longer load after recompile and install into the new kernel directory. I went back to the ztdummy driver with the same problem. Below is the relevant errors and info. Chris # modprobe wctdm FATAL: Error inserting wctdm (/lib/modules/2.6.12-prep/misc/wctdm.ko): Unknown symbol in module, or unknown parameter (see dmesg) FATAL: Error running install command for wctdm # dmesg wctdm: disagrees about version of symbol zt_receive wctdm: Unknown symbol zt_receive wctdm: disagrees about version of symbol zt_qevent_lock wctdm: Unknown symbol zt_qevent_lock wctdm: disagrees about version of symbol zt_ec_chunk wctdm: Unknown symbol zt_ec_chunk wctdm: disagrees about version of symbol zt_transmit wctdm: Unknown symbol zt_transmit wctdm: disagrees about version of symbol zt_unregister wctdm: Unknown symbol zt_unregister wctdm: disagrees about version of symbol zt_hooksig wctdm: Unknown symbol zt_hooksig wctdm: disagrees about version of symbol zt_register wctdm: Unknown symbol zt_register # cat /proc/interrupts CPU0 0: 34991774 IO-APIC-edge timer 1: 10 IO-APIC-edge i8042 8: 1 IO-APIC-edge rtc 9: 1 IO-APIC-level acpi 12: 111 IO-APIC-edge i8042 14: 170392 IO-APIC-edge ide0 15: 383872 IO-APIC-edge ide1 18: 0 IO-APIC-level SiS SI7012, SiS SI7013 Modem 19: 164220 IO-APIC-level eth0 20: 0 IO-APIC-level ohci_hcd:usb2 21: 0 IO-APIC-level ohci_hcd:usb3 22: 0 IO-APIC-level ohci_hcd:usb4 23: 0 IO-APIC-level ehci_hcd:usb1 NMI: 0 LOC: 34991738 ERR: 0 MIS: 0
Geoff Manning
2006-Mar-01 07:41 UTC
[Asterisk-Users] Sound quality issue in one direction and wctdm problem with APIC enabled kernel
On 2/28/06, Chris Miller <asterisk@scratchspace.com> wrote:> > I'm chasing down a pop/click type of disturbance on a PBX system. > Strangely, the disturbance is only heard by the outside caller, the > internal recipient hears the caller crystal clear. This seems to have > crept up when upgrading the zaptel driver to the 1.2 series while > running 1.0.10. I went ahead and upgraded the entire system to 1.2.4. > >That's funny, I'm trying to chase down pop/clicks on two of my installations but they are only heard by the internal recipient. The outside caller doesn't hear it at all! We have Dell SC420, Asterisk/Zaptel 1.2.1 and a TE110P integrated into a legacy PBX. It only occurs with internal users that are using their legacy handsets to call out through Asterisk. The Cisco 79XX users do not have this issue. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20060301/e1f2663a/attachment.htm