Sirs, I need your experience with this issue, I have installed a box: Hardware: DELL POWER EDGE R610 + Processor = Intel(R) Xeon(R) CPU E5620 @ 2.40GHz + Memory = 4Gb Software: Opensuse 11.4 (x86_64) + kernel 2.6.34-12-desktop #1 SMP PREEMPT + asterisk-1.4.40 + dahdi-linux-2.4.1.2 + dahdi-tools-2.4.1 + chan_ss7-2.0.0 The box is conected to three diferent switches, one E1 for each switch.(Ericsson AXE L 7/TL 4), and the asterisk box is used as an IVR. When asterisk starts, these messages appears: chan_ss7.so => (SS7 Protocol Support) [May 3 15:29:31] NOTICE[20357]: mtp.c:2349 mtp_init_link: Initialising link 'l1/16', linkset 'switch1', sls 0. [May 3 15:29:31] NOTICE[20357]: mtp.c:2367 mtp_init_link: Signalling channel on link 'l1/16' has signalling type 0x0080. [May 3 15:29:31] NOTICE[20357]: mtp.c:2349 mtp_init_link: Initialising link 'l2/16', linkset 'switch2', sls 0. [May 3 15:29:31] NOTICE[20357]: mtp.c:2367 mtp_init_link: Signalling channel on link 'l2/16' has signalling type 0x0080. [May 3 15:29:31] NOTICE[20357]: mtp.c:2349 mtp_init_link: Initialising link 'l3/16', linkset 'switch3', sls 0. [May 3 15:29:31] NOTICE[20357]: mtp.c:2367 mtp_init_link: Signalling channel on link 'l3/16' has signalling type 0x0080. [May 3 15:29:31] NOTICE[20357]: mtp.c:2064 mtp_thread_main: Empty Dahdi output buffer detected, outgoing packets may have been lost on link 'l1'. [May 3 15:29:31] NOTICE[20357]: mtp.c:2064 mtp_thread_main: Empty Dahdi output buffer detected, outgoing packets may have been lost on link 'l2'. [May 3 15:29:31] NOTICE[20357]: mtp.c:2064 mtp_thread_main: Empty Dahdi output buffer detected, outgoing packets may have been lost on link 'l3'. Despite this error message, both E1 seems to be OK in audio quality, I did only a few test calls because it's not in production yet. Sometimes, I see messages like these when there is only one call running: [Apr 29 10:42:53] NOTICE[15389] l4isup.c: Audio buffer underrun, data 20 msecs, real time: 1006 msecs! (supressed 0) Do you have any suggestion to avoid these messages? Is there a performance problem? All your help is appreciated. My config files are: chan_ss7.conf is: [linkset-switch1] enabled => yes enable_st => yes use_connect => no hunting_policy => seq_lth context => fromss7 language => en t35 => 10000,timeout subservice => auto variant => ITU [linkset-switch2] enabled => yes enable_st => yes use_connect => no hunting_policy => seq_lth context => fromss7 language => en t35 => 10000,timeout subservice => auto variant => ITU [linkset-switch3] enabled => yes enable_st => yes use_connect => no hunting_policy => seq_lth context => fromss7 language => en t35 => 10000,timeout subservice => auto variant => ITU [link-l1] linkset => switch1 channels => 1-15,17-31 schannel => 16 firstcic => 1 enabled => yes [link-l2] linkset => switch2 channels => 1-15,17-31 schannel => 16 firstcic => 1 enabled => yes [link-l3] linkset => switch3 channels => 1-15,17-31 schannel => 16 firstcic => 1 enabled => yes [host-ivr1] default_linkset => switch3 enabled => yes opc => 0x232D dpc => switch1:0x3c01,switch2:0x3800,switch3:0x3c00 links => l1:1,l2:2,l3:3 if-0 => 10.245.193.93 system.conf span=1,1,0,ccs,hdb3 bchan=1-31 span=2,2,0,ccs,hdb3 bchan=32-62 span=3,3,0,ccs,hdb3 bchan=63-93 loadzone = us defaultzone = us Thanks! Alejandro Galasso alejandro.galasso at gmail.com
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