2013.09.10 - posted in Asterisk
Quick note-to-self, which I should’ve elaborated on in hindsight.
voip>dahdi show status
Description Alarms IRQ bpviol CRC4 Fra Codi Options LBO
Wildcard TE121 Card 0 OK 1 -1 -1 CCS HDB3 CRC4 0 db (CSU)/0-133 feet (DSX-1)
voip>pri show span 1
Primary D-channel: 16
Status: Provisioned, Up, Active
Switchtype: EuroISDN
Type: CPE
Remote type: Network
Overlap Dial: 0
Logical Channel Mapping: 0
Timer and counter settings:
N200: 3
N202: 3
K: 7
T200: 1000
T201: 1000
T202: 10000
T203: 10000
T303: 4000
T305: 30000
T308: 4000
T309: 6000
T312: 6000
T313: 4000
T316: -1
N316: 2
T-HOLD: 4000
T-RETRIEVE: 4000
T-RESPONSE: 4000
T-STATUS: 4000
T-ACTIVATE: 10000
T-DEACTIVATE: 4000
T-INTERROGATE: 4000
T-RETENTION: 30000
T-CCBS1: 4000
T-CCBS2: 2700000
T-CCBS3: 20000
T-CCBS4: 5000
T-CCBS5: 3600000
T-CCBS6: 3600000
T-CCNR2: 10800000
T-CCNR5: 11700000
T-CCNR6: 11700000
Q931 RX: 25186
Q931 TX: 20362
Q921 RX: 286934
Q921 TX: 286201
Q921 Outstanding: 0 (TEI=0)
Total active-calls:2 global:1
CC records:
Overlap Recv: No
voip>dahdi show channel 1
2011.10.20 - posted in Cisco
Here’s how to configure the network end of an E1-E1 back-to-back setup:
network-clock-participate wic 2
isdn switch-type primary-net5
!
controller E1 0/2/0
clock source internal pri-group timeslots 1-3,16
!
interface Serial0/2/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn protocol-emulate network
isdn incoming-voice voice
no cdp enable
!
Ofcourse, the 2 statements that differ from a normal setup are (the first under the controller configuration, the last under the serial interface configuration):
clock source internal
isdn protocol-emulate network
If all is well, the command show isdn status gives:
Global ISDN Switchtype = primary-net5
ISDN Serial0/2/0:15 interface
******* Network side configuration *******
dsl 2, interface ISDN Switchtype = primary-net5
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 2 CCBs = 0
The Free Channel Mask: 0x80000007
Number of L2 Discards = 0, L2 Session ID = 107
Total Allocated ISDN CCBs = 0
2011.10.19 - posted in cabling
Here’s how to connect 2 E1 RJ45 interfaces back-to-back:
First End
PIN 1 ORANGE
PIN 2 WHITE/ORANGE
PIN 4 BLUE
PIN 5 WHITE/BLUE
Second End
PIN 1 BLUE
PIN 2 WHITE/BLUE
PIN 4 ORANGE
PIN 5 WHITE/ORANGE
2009.08.17 - posted in Cisco
The other day I was working on a setup that would forward an incoming call to an external destination using an ISDN BRI interface. This would come in handy if nobody’s at the office, but you don’t want to miss calls placed to the main number. Time and again my attempts were failing with:
Cause i = 0×82E46C – Invalid information element contents
Searching the Internets for this cause code didn’t yield many results, but I did find some documentation on the Cisco website: Call Forward from CallManager Express to an External Number Fails. CME might also use the original calling number for the inbound call as the calling number for the outbound call leg. To prevent this from happening, you can use outgoing translation rules. A likely indication that this might work for you would be:
Cause i = 0×829C – Invalid number format(incomplete number)
This didn’t solve my problem. In the end it turned out to be the numbering plan type as somebody pointed out. I configured the following, which made it work:
interface bri 0/0
isdn map address . plan unknown type unknown
!
