Thanks you very much for your reply. I am still facing the issue. Please see the logs once and guide me about this problem. I am stuck here from last week. localhost*CLI> dahd restart No such command 'dahd restart' (type 'help dahd restart' for other possible commands) localhost*CLI> dahdi restart Destroying channels and reloading DAHDI configuration. > Initial softhangup of all DAHDI channels complete. > Final softhangup of all DAHDI channels complete. == Unregistered channel -2 == Unregistered channel 1 == Unregistered channel 2 == Unregistered channel 3 == Unregistered channel 4 == Unregistered channel 5 == Unregistered channel 6 == Unregistered channel 7 == Unregistered channel 8 == Unregistered channel 9 == Unregistered channel 10 == Unregistered channel 11 == Unregistered channel 12 == Unregistered channel 13 == Unregistered channel 14 == Unregistered channel 15 == Unregistered channel 17 == Unregistered channel 18 == Unregistered channel 19 == Unregistered channel 20 == Unregistered channel 21 == Unregistered channel 22 == Unregistered channel 23 == Unregistered channel 24 == Unregistered channel 25 == Unregistered channel 26 == Unregistered channel 27 == Unregistered channel 28 == Unregistered channel 29 == Unregistered channel 30 == Unregistered channel 31 == Parsing '/etc/asterisk/chan_dahdi.conf': == Found -- Reconfigured channel 1, SS7 signalling -- Reconfigured channel 2, SS7 signalling -- Reconfigured channel 3, SS7 signalling -- Reconfigured channel 4, SS7 signalling -- Reconfigured channel 5, SS7 signalling -- Reconfigured channel 6, SS7 signalling -- Reconfigured channel 7, SS7 signalling -- Reconfigured channel 8, SS7 signalling -- Reconfigured channel 9, SS7 signalling -- Reconfigured channel 10, SS7 signalling -- Reconfigured channel 11, SS7 signalling -- Reconfigured channel 12, SS7 signalling -- Reconfigured channel 13, SS7 signalling -- Reconfigured channel 14, SS7 signalling -- Reconfigured channel 15, SS7 signalling -- Reconfigured channel 17, SS7 signalling -- Reconfigured channel 18, SS7 signalling -- Reconfigured channel 19, SS7 signalling -- Reconfigured channel 20, SS7 signalling -- Reconfigured channel 21, SS7 signalling -- Reconfigured channel 22, SS7 signalling -- Reconfigured channel 23, SS7 signalling -- Reconfigured channel 24, SS7 signalling -- Reconfigured channel 25, SS7 signalling -- Reconfigured channel 26, SS7 signalling -- Reconfigured channel 27, SS7 signalling -- Reconfigured channel 28, SS7 signalling -- Reconfigured channel 29, SS7 signalling -- Reconfigured channel 30, SS7 signalling -- Reconfigured channel 31, SS7 signalling -- Automatically generated pseudo channel == Starting SS7 linkset on span 1 Huh?! Got FISU in link state 1 MTP2 link up (SLC 0) --- SS7 Up --- Resetting CICs 0 to 29 Received out of sequence MSU w/ fsn of 2, lastfsnacked = 0, requesting retransmission MSU received, though still waiting for retransmission start. Dropping. Received out of sequence MSU w/ fsn of 2, lastfsnacked = 0, requesting retransmission MSU received, though still waiting for retransmission start. Dropping. Received out of sequence MSU w/ fsn of 3, lastfsnacked = 1, requesting retransmission MTP2 link up (SLC 0) localhost*CLI> Regards, Shahid Bashir Ahmad From: asterisk-ss7-bounces@xxxxxxxxxxxxxxxx [mailto:asterisk-ss7-bounces at lists.digium.com] On Behalf Of Yoherman Sent: Tuesday, March 09, 2010 9:18 AM To: asterisk-ss7 at lists.digium.com Subject: Re: Urgent Help try to compare with this below. My configuration worked : 2 E1 with channel 16 for signalling. chan_dahdi.conf [trunkgroups] [channels] language=en context=default switchtype=5ess pridialplan=unknown prilocaldialplan=unknown signalling=ss7 usecallerid=yes hidecallerid=no callerid=asreceived callwaiting=yes usecallingpres=yes callwaitingcallerid=yes threewaycalling=yes facilityenable = yes transfer=yes ;cancallforward=yes callreturn=yes busydetect=yes hanguponpolarityswitch=yes usecallingpres=yes ss7_called_nai=dynamic ss7_calling_nai=dynamic ss7_internationalprefix = 00 ss7_nationalprefix = 0 ss7_subscriberprefix = ss7_unknownprefix = group=1 signalling = ss7 context= ss7 ss7type = itu linkset = 1 slc=0 pointcode=<Mine> adjpointcode=<Telco> defaultdpc=<Telco> cicbeginswith = 1 networkindicator=national channel = 1-15,17-31 sigchan = 16 channel = 33-64 linuxgurus at gmail.com wrote: Please help on this how we can resolve this issue. What this error means? Why SS7 link drop... Huh?! Got FISU in link state 1 MTP2 link up (SLC 0) --- SS7 Up --- Resetting CICs 1 to 30 Received out of sequence MSU w/ fsn of 2, lastfsnacked = 0, requesting retransmission MSU received, though still waiting for retransmission start. Dropping. MTP2 link up (SLC 0) localhost*CLI> exit See the complete logs .... localhost*CLI> dahdi restart Destroying channels and reloading DAHDI configuration. == Unregistered channel -2 == Unregistered channel 1 == Unregistered channel 2 == Unregistered channel 3 == Unregistered channel 4 == Unregistered channel 5 == Unregistered channel 6 == Unregistered channel 7 == Unregistered channel 8 == Unregistered channel 9 == Unregistered channel 10 == Unregistered channel 11 == Unregistered channel 12 == Unregistered channel 13 == Unregistered channel 14 == Unregistered channel 15 == Unregistered channel 17 == Unregistered channel 18 == Unregistered channel 19 == Unregistered channel 20 == Unregistered channel 21 == Unregistered channel 22 == Unregistered channel 23 == Unregistered channel 24 == Unregistered channel 25 == Unregistered channel 26 == Unregistered channel 27 == Unregistered channel 28 == Unregistered channel 29 == Unregistered channel 30 == Unregistered channel 31 == Parsing '/etc/asterisk/chan_dahdi.conf': == Found -- Reconfigured channel 1, SS7 signalling -- Reconfigured channel 2, SS7 signalling -- Reconfigured channel 3, SS7 signalling -- Reconfigured channel 4, SS7 signalling -- Reconfigured channel 5, SS7 signalling -- Reconfigured channel 6, SS7 signalling -- Reconfigured channel 7, SS7 signalling -- Reconfigured channel 8, SS7 signalling -- Reconfigured channel 9, SS7 signalling -- Reconfigured channel 10, SS7 signalling -- Reconfigured channel 11, SS7 signalling -- Reconfigured channel 12, SS7 signalling -- Reconfigured channel 13, SS7 signalling -- Reconfigured channel 14, SS7 signalling -- Reconfigured channel 15, SS7 signalling -- Reconfigured channel 17, SS7 signalling -- Reconfigured channel 18, SS7 signalling -- Reconfigured channel 19, SS7 signalling -- Reconfigured channel 20, SS7 signalling -- Reconfigured channel 21, SS7 signalling -- Reconfigured channel 22, SS7 signalling -- Reconfigured channel 23, SS7 signalling -- Reconfigured channel 24, SS7 signalling -- Reconfigured channel 25, SS7 signalling -- Reconfigured channel 26, SS7 signalling -- Reconfigured channel 27, SS7 signalling -- Reconfigured channel 28, SS7 signalling -- Reconfigured channel 29, SS7 signalling -- Reconfigured channel 30, SS7 signalling -- Reconfigured channel 31, SS7 signalling -- Automatically generated pseudo channel == Starting SS7 linkset on span 1 Huh?! Got FISU in link state 1 MTP2 link up (SLC 0) --- SS7 Up --- Resetting CICs 1 to 30 Received out of sequence MSU w/ fsn of 2, lastfsnacked = 0, requesting retransmission MSU received, though still waiting for retransmission start. Dropping. MTP2 link up (SLC 0) localhost*CLI> exit ======================================= Your Messages Has Been Scan with Telkom Mail Security ======================================= _____ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.435 / Virus Database: 271.1.1/2728 - Release Date: 03/07/10 07:34:00 ============================================== Flexi ngROOMpi : Ngobrol bareng teman pake flexi ngROOMpi kapan aja, dari mana aja se-Indonesia Rp 49/Menit. Caranya: call *55*nomor-room ( nomor room 1 s/d 9999 ). 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