[asterisk-ss7] RES: often receives BAD FCS errors

[Rafael Prado Rocchi]

Check your CPU Usage and try disabling echo cancelation.

 

 

De: asterisk-ss7-bounces at lists.digium.com
[mailto:asterisk-ss7-bounces at lists.digium.com] Em nome de bipin singh
Enviada em: sexta-feira, 22 de abril de 2011 1:29
Para: asterisk-ss7 at lists.digium.com
Assunto: Re: [asterisk-ss7] often receives BAD FCS errors

 

Hi,
         Check your chan_dahdi.conf setting some things is wrong .

2011/4/20 黄东涛 <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


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-- 
BIPIN RAGHUVANSHI
OPERATION HEAD
ASTERISK (DEVELOPMENT AND RESEARCH)  
WWW.EHORIZONS.IN
011-32323262
011-46334633

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