This does not appear to be an SS7 issue.
Check your cables and connections, particularly for loose contacts or
potential shorts (e.g. where the jumper cable on the Krone block is
making poor contact or the cable hasn't been stripped cleanly and is
touching another pair or the frame itself, or where stranded cable has
been punched into a Krone block instead of solid core cable).
Sangoma cards can give signal strength readings. For info on how to get
this, check:
http://wiki.sangoma.com/Wanpipemon-T1-E1-physical-Line-alarms
It can also be load/interrupt related it you have multiple cards, but
unlikely with just one A101, unless an old motherboard and the card is
sharing IRQs unhappily with too many other devices.
See: http://wiki.sangoma.com/Wanpipe-Debugging
On 2012/10/11 10:28 PM, Geoffrey Yeoh wrote:
Hi,
I have a box with four A101 Sangoma E1 cards running Asterisk 1.8 with
FreePBX. I've been getting this messages in CLI consistently
[2012-10-11 20:33:55] NOTICE[11474]: chan_dahdi.c:3426
my_handle_link_exception: SS7 got event: HDLC Abort(6) on span 1/0
[2012-10-11 20:33:55] NOTICE[11474]: chan_dahdi.c:3426
my_handle_link_exception: SS7 got event: HDLC Overrun(7) on span 1/0
[2012-10-11 20:33:57] NOTICE[11474]: chan_dahdi.c:3426
my_handle_link_exception: SS7 got event: HDLC Abort(6) on span 1/0
[2012-10-11 20:34:30] NOTICE[11474]: chan_dahdi.c:3426
my_handle_link_exception: SS7 got event: HDLC Abort(6) on span 1/0
[2012-10-11 20:34:31] NOTICE[11474]: chan_dahdi.c:3426
my_handle_link_exception: SS7 got event: HDLC Overrun(7) on span 1/0
[2012-10-11 20:34:33] NOTICE[11474]: chan_dahdi.c:3426
my_handle_link_exception: SS7 got event: HDLC Bad FCS(8) on span 1/0
[2012-10-11 20:35:06] NOTICE[11474]: chan_dahdi.c:3426
my_handle_link_exception: SS7 got event: HDLC Abort(6) on span 1/0
My wanpipe configuration is as follows:
[wanpipe1]
CARD_TYPE = AFT
S514CPU = A
CommPort = PRI
AUTO_PCISLOT = NO
PCISLOT = 4
PCIBUS = 2
FE_MEDIA = E1
FE_LCODE = HDB3
FE_FRAME = NCRC4
FE_LINE = 1
TE_CLOCK = NORMAL
TE_REF_CLOCK = 0
TE_SIG_MODE = CCS
TE_HIGHIMPEDANCE = NO
TE_RX_SLEVEL = 430
HW_RJ45_PORT_MAP = DEFAULT
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 = YES # YES: receive dtmf events from
hardware
TDMV_HW_FAX_DETECT = YES # 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
My chan_dahdi.conf is as follows:
signaling=ss7 ;this is ss7 signaling
ss7type=itu ;using the ITU variant
ss7_called_nai=dynamic ;NAI for outgoing calls
ss7_calling_nai=dynamic ;NAI for incoming calls
ss7_internationalprefix=00 ;international prefix value for incoming calls
ss7_nationalprefix=33 ;national prefix value for incoming calls
ss7_subscriberprefix=3364 ;subscriber prefix value for incoming calls
ss7_unknownprefix= ;unknown prefix value for incoming calls
;ss7_explictacm=yes ;ACM is send as soon as call enters the dial plan...may
not accepted yet though
ss7_autoacm=yes
linkset=1 ;arbitrary name for this set of channels
pointcode=6021 ;the point code for this system...aka SPC
adjpointcode=6000 ;the point code for the system that we are signaling to...
aka APC
defaultdpc=6000 ;the point code for the system that the CICs will be
negotiated with...aka DPC
networkindicator=national ;NI value for MTP3
cicbeginswith=1 ;the starting value of the CICs
channel=1-15 ;the channels that are CICs
cicbeginswith=17 ;the starting value of the CICs
channel=17-31 ;the channels that are CICs
sigchan=16
cicbeginswith=32 ;the starting value of the CICs
channel=32-46 ;the channels that are CICs
cicbeginswith=48 ;the starting value of the CICs
channel=48-62 ;the channels that are CICs
sigchan=47
cicbeginswith=63 ;the starting value of the CICs
channel=63-77 ;the channels that are CICs
cicbeginswith=79 ;the starting value of the CICs
channel=79-93 ;the channels that are CICs
sigchan=78
cicbeginswith=94 ;the starting value of the CICs
channel=94-108 ;the channels that are CICs
cicbeginswith=110 ;the starting value of the CICs
channel=110-124 ;the channels that are CICs
sigchan=109
and the system.conf:
loadzone=us
defaultzone=us
#Sangoma A101 port 1 [slot:4 bus:2 span:1] <wanpipe1>
span=1,1,0,ccs,hdb3
bchan=1-15,17-31
echocanceller=mg2,1-15,17-31
mtp2=16
#Sangoma A101 port 1 [slot:9 bus:2 span:2] <wanpipe2>
span=2,2,0,ccs,hdb3
bchan=32-46,48-62
echocanceller=mg2,32-46,48-62
mtp2=47
#Sangoma A101 port 1 [slot:10 bus:2 span:3] <wanpipe3>
span=3,3,0,ccs,hdb3
bchan=63-77,79-93
echocanceller=mg2,63-77,79-93
mtp2=78
#Sangoma A101 port 1 [slot:11 bus:2 span:4] <wanpipe4>
span=4,4,0,ccs,hdb3
bchan=94-108,110-124
echocanceller=mg2,94-108,110-124
mtp2=109
I've used the above configuration countless times with problems - I am
stumped.
Any help and suggestions appreciated and welcome.
Best regards,
Geoffrey
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