[Asteriskbrasil-biz] Erro dahdi com R2 operadora Oi

[Flavio N C S]

Ola pessoal,estou ativando um servidor asterisk-11 com centOS 6 em um ambiente com uma central da Unify/Siemens X8.Há central esta com um link E1 R2 da Oi, foi colocado o servidor no meio, esta fazendo e recebendo chamadas porém algumas ligações estão caindo e fica aparecendo esta mensagem de erro no console.desde já agradeço..Flavio"[Feb 25 16:26:11] ERROR[2556]: chan_dahdi.c:4300 dahdi_r2_write_log: Chan 42 - Protocol error. Reason = Invalid CAS, R2 State = Seize ACK Transmitted, MF state = ANI Request Transmitted, MF Group = Backward Group A, CAS = 0x04DNIS = 3900, ANI = 4, MF = 0x34[Feb 25 16:26:11] ERROR[2556]: chan_dahdi.c:4060 dahdi_r2_on_protocol_error: MFC/R2 protocol error on chan 42: Invalid CASNew MFC/R2 call detected on chan 42."segue meus arquivos de conf./etc/dahdi/system.conf span=1,1,0,cas,hdb3cas=1-15,17-31:1101echocanceller=mg2,1-15,17-31span=2,0,0,cas,hdb3cas=32-46,48-62:1101echocanceller=mg2,32-46,48-62loadzone        = brdefaultzone     = br/etc/asterisk/chan_dahdi.conf[trunkgroups][channels]language=brusecallerid=yescallwaiting=yesusecallingpres=yescallwaitingcallerid=yesthreewaycalling=yestransfer=yescanpark=yescancallforward=yesthreewaycalling=yestransfer=yescanpark=yescancallforward=yescallreturn=yesechocancel=yesechocancelwhenbridged=no;######################################################################################;               EXEMPLO DE CONFIGURACAO PARA R2 PARA OPERADORA OI-BRTsignalling=mfcr2mfcr2_variant=brmfcr2_get_ani_first=nomfcr2_max_ani=20mfcr2_max_dnis=20mfcr2_category=national_subscribermfcr2_call_files=yesmfcr2_logdir=brtmfcr2_logging=allmfcr2_mfback_timeout=4000mfcr2_allow_collect_calls=yesmfcr2_double_answer=yescontext=FAZ-TUDOgroup=1channel=>1-15cicbeginswith=17channel=>17-31;######################################################################################;               EXEMPLO DE CONFIGURACAO PARA R2 EM CENTRAIS SIEMENS HIPATH 3000signalling=mfcr2mfcr2_variant=brmfcr2_immediate_accept=nomfcr2_get_ani_first=nomfcr2_max_ani=20mfcr2_max_dnis=20mfcr2_category=national_subscribermfcr2_mfback_timeout=1000; To avoid call being dropped after 500msmfcr2_metering_pulse_timeout=2000mfcr2_allow_collect_calls=yesmfcr2_double_answer=yesmfcr2_charge_calls=yescontext=FAZ-TUDOgroup=0channel=>32-46cicbeginswith=48channel=>48-62;###################################################################################### 		 	   		  
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