When the clocks are not properly configured, they go out of sync, causing frame slips and corruption of data. Torrey 2011/4/21 ??? <tprax634 at hotmail.com>: > Hi, > Amazing,it works. Thx a lot. But why does it always appears FCS errors > when TE_CLOCK value is MASTER? > >> Date: Wed, 20 Apr 2011 17:13:02 +0200 >> From: tsearle at gmail.com >> To: asterisk-ss7 at lists.digium.com >> Subject: Re: [asterisk-ss7] often receives BAD FCS errors >> >> try changing >> >> TE_CLOCK to slave >> >> Torrey >> >> 2011/4/20 ??? <tprax634 at hotmail.com>: >> > Hi, >> > >> > Anybody knows why my mtp2 link works fine but continuously appears BAD >> > FCS >> > errors? What causes this error? >> > >> > >> > Here is my conf: >> > 1.dahdi/system.conf >> > >> > loadzone=us >> > defaultzone=us >> > >> > #Sangoma A102 port 1 [slot:4 bus:4 span:1] <wanpipe1> >> > span=1,1,0,ccs,hdb3,crc4 >> > bchan=1-15,17-31 >> > mtp2=16 >> > >> > #Sangoma A102 port 2 [slot:4 bus:4 span:2] <wanpipe2> >> > span=2,2,0,ccs,hdb3,crc4 >> > bchan=32-46,48-62 >> > mtp2=47 >> > >> > 2.wanpipe/wanpipe1.conf >> > >> > [devices] >> > wanpipe1 = WAN_AFT_TE1, Comment >> > >> > [interfaces] >> > w1g1 = wanpipe1, , TDM_VOICE, Comment >> > >> > [wanpipe1] >> > CARD_TYPE = AFT >> > S514CPU = A >> > CommPort = PRI >> > AUTO_PCISLOT = NO >> > PCISLOT = 4 >> > PCIBUS = 4 >> > FE_MEDIA = E1 >> > FE_LCODE = HDB3 >> > FE_FRAME = CRC4 >> > FE_LINE = 1 >> > TE_CLOCK = MASTER >> > TE_REF_CLOCK = 0 >> > TE_SIG_MODE = CCS >> > TE_HIGHIMPEDANCE = NO >> > TE_RX_SLEVEL = 430 >> > LBO = 120OH >> > FE_TXTRISTATE = NO >> > MTU = 1500 >> > UDPPORT = 9000 >> > TTL = 255 >> > IGNORE_FRONT_END = NO >> > TDMV_SPAN = 1 >> > TDMV_DCHAN = 0 >> > TE_AIS_MAINTENANCE = NO #NO: defualt YES: Start port in AIS Blue >> > Alarm and keep line down >> > #wanpipemon -i w1g1 -c Ttx_ais_off to >> > disable AIS maintenance mode >> > #wanpipemon >> > -i w1g1 -c Ttx_ais_on to enable AIS maintenance mode >> > TDMV_HW_DTMF = NO # YES: receive dtmf events from >> > hardware >> > TDMV_HW_FAX_DETECT = NO # YES: receive fax 1100hz >> > events from hardware >> > HWEC_OPERATION_MODE = OCT_NORMAL # OCT_NORMAL: echo cancelation >> > enabled with nlp (default) >> > >> > # OCT_SPEECH: improves software tone detection by disabling NLP (echo >> > possible) >> > >> > # OCT_NO_ECHO:disables echo cancelation but allows VQE/tone functions. >> > HWEC_DTMF_REMOVAL = NO # NO: default YES: remove dtmf out of >> > incoming media (must have hwdtmf enabled) >> > HWEC_NOISE_REDUCTION = NO # NO: default YES: reduces noise on the >> > line - could break fax >> > HWEC_ACUSTIC_ECHO = NO # NO: default YES: enables acustic echo >> > cancelation >> > HWEC_NLP_DISABLE = NO # NO: default YES: guarantees software tone >> > detection (possible echo) >> > HWEC_TX_AUTO_GAIN = 0 # 0: disable -40-0: default tx audio level >> > to be maintained (-20 default) >> > HWEC_RX_AUTO_GAIN = 0 # 0: disable -40-0: default tx audio level >> > to be maintained (-20 default) >> > HWEC_TX_GAIN = 0 # 0: disable -24-24: db values to >> > be applied to tx signal >> > HWEC_RX_GAIN = 0 # 0: disable -24-24: db values to >> > be applied to tx signal >> > >> > [w1g1] >> > ACTIVE_CH = ALL >> > TDMV_HWEC = NO >> > MTU = 8 >> > >> > >> > -- >> > _____________________________________________________________________ >> > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> > >> > asterisk-ss7 mailing list >> > To UNSUBSCRIBE or update options visit: >> > http://lists.digium.com/mailman/listinfo/asterisk-ss7 >> > >> >> -- >> _____________________________________________________________________ >> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> >> asterisk-ss7 mailing list >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-ss7 > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-ss7 mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-ss7 >
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