[asterisk-users] E1 R2 Congestion Status

Tue Dec 22 08:08:09 CST 2009

I have a 'CONGESTION' Status with R2 protocol.

While testing this scenario     sip GW--àAsterisk –Digium E1 R2
ProtocolàCisco E1 R2 protocolàsip Gw

Find below my error and configuration ,where are the errors in my
configuration ?

=========================================================================

Connected to Asterisk SVN-branch-1.6.2-r235775 currently running on
rev-212-98-156-56 (pid = 3614)

Verbosity is at least 3

  == Using SIP RTP CoS mark 5

    -- Executing [00223344 at default:1] Dial("SIP/98.34.56.216-0000000e",
"DAHDI/g1/00223344") in new stack

[Dec 22 06:02:49] WARNING[4756]: app_dial.c:1745 dial_exec_full: Unable to
create channel of type 'DAHDI' (cause 34 - Circuit/channel congestion)

  == Everyone is busy/congested at this time (1:0/1/0)

    -- Auto fallthrough, channel 'SIP/98.34.56.216-0000000e' status is
'CONGESTION'

Cisco Gateway 

show controller

Controller E1 slot(0)/port(0) 

   E1 Link is UP

      No Alarm detected.

      Applique type is Channelized E1.

      Framing is CRC4, Line Code is HDB3.

      Signalling type is R2-MFC.

      0 Line Code Violations, 0 Framing Bit Errors

      0 Far End Block Errors, 0 CRC Errors

   signalling type = r2 

   clock source = slave 

   channel group 0 = 1-31 

                                  1         2         3

   allocated timeslots = YYYYYYYYYYYYYYYNYYYYYYYYYYYYYYY 

   outgoing barred channel group =  

   channel order = ascending 

   b-channel negotiation = exclusive 

   overlap receiving by forced = disabled 

   overlap sending by forced = disabled 

   protocol side = network 

   R2 get calling number = none 

   ISDN virtual connect = disabled 

   ISDN Layer 2 is DOWN

   ISDN Values

      ISDN Layer 2 values

         k    = 7

         N200 = 3

         N201 = 260

         T200 = 1 seconds

         T203 = 10 seconds

      ISDN Layer 3 values

         T301 = 180 seconds

         T303 = 4 seconds

         T304 = 20 seconds

         T305 = 30 seconds

         T306 = 30 seconds

         T308 = 4 seconds

         T310 = 10 seconds

         T313 = 10 seconds

         T316 = 120 seconds

         T322 = 4 seconds

         T309 = 90 seconds

         N303 = 1

---------------------------

/etc/asterisk/chan_dahdi.conf

[trunkgroups]

signalling=mfcr2

mfcr2_variant=mx

trunkgroup => 1,16

spanmap => 1,1,1

[channels]

signalling=mfcr2

mfcr2_variant=mx

context=default

signalling=mfcr2

mfcr2_variant=mx

signalling=mfcr2

mfcr2_variant=mx

usecallerid=yes

callwaiting=yes

usecallingpres=yes

callwaitingcallerid=yes

threewaycalling=yes

transfer=yes

canpark=yes

cancallforward=yes

callreturn=yes

echocancel=yes

echocancelwhenbridged=yes

group=1

callgroup=1

pickupgroup=1

callerid = asreceived

useincomingcalleridondahditransfer = yes

tonezone = 0 ; 0 is US

channel => 1-15,17-31

signalling=mfcr2

mfcr2_variant=itu

mfcr2_max_ani=7

mfcr2_max_dnis=8

mfcr2_get_ani_first=no

mfcr2_category=national_subscriber

mfcr2_logdir=span1

mfcr2_logging=all

;EOF

cat /etc/dahdi/system.conf

# Autogenerated by /usr/sbin/dahdi_genconf on Tue Dec 22 01:59:02 2009

# If you edit this file and execute /usr/sbin/dahdi_genconf again,

# your manual changes will be LOST.

# Dahdi Configuration File

#

# This file is parsed by the Dahdi Configurator, dahdi_cfg

#

# Span 1: TE4/0/1 "T4XXP (PCI) Card 0 Span 1" (MASTER) HDB3/CCS/CRC4 RED

span=1,1,0,cas,hdb3,crc4

# termtype: te

#bchan=1-15,17-31

#dchan=16

cas=1-15:1101

dchan=16

cas=17-31:1101

echocanceller=mg2,1-15,17-31

# Span 2: TE4/0/2 "T4XXP (PCI) Card 0 Span 2" HDB3/CCS/CRC4 RED

span=2,2,0,ccs,hdb3,crc4

# termtype: te

bchan=32-46,48-62

dchan=47

echocanceller=mg2,32-46,48-62

# Span 3: TE4/0/3 "T4XXP (PCI) Card 0 Span 3" HDB3/CCS/CRC4 RED

span=3,3,0,ccs,hdb3,crc4

# termtype: te

bchan=63-77,79-93

dchan=78

echocanceller=mg2,63-77,79-93

# Span 4: TE4/0/4 "T4XXP (PCI) Card 0 Span 4" HDB3/CCS/CRC4 RED

span=4,4,0,ccs,hdb3,crc4

# termtype: te

bchan=94-108,110-124

dchan=109

echocanceller=mg2,94-108,110-124

# Global data

loadzone        = us

defaultzone     = us

[default]

exten => _X.,1,Dial(DAHDI/g1/${EXTEN})

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