# lspci | grep E1 05:00.0 Network controller: OpenVox Communication Co. Ltd. D130P/D130E Single-port E1/T1 card (3rd GEN) (rev 15) # wget http://www.openvox.cn/pub/drivers/dahdi-linux-complete/openvox_dahdi-linux-complete-current.tar.gz # cd dahdi-linux-complete-2.11.1+2.11.1/ # make all # make install # find /lib/modules | grep dahdi # find /lib/modules | grep opv # init 6 # lsmod | grep dah # lsmod | grep opv # apt install dahdi # dahdi_hardware pci:0000:05:00.0 opvxd115- 1b74:d130 OpenVox D130P/D130E
Channels in DAHDI devices (such as DAHDI PCI cards) are groups to logical units called “spans” (for example: a port in a digital card is a span).
span ⇒ <Number>,<Timing>,<Line BuildOut>,<Framing>,<Coding>[,Yellow]
Timing:
This determines how timing is handled by the card.
Line BuildOut:
The line build-out (or LBO) is an integer, from the following table:
0: 0 db (CSU) / 0-133 feet (DSX-1) 1: 133-266 feet (DSX-1) 2: 266-399 feet (DSX-1) 3: 399-533 feet (DSX-1) 4: 533-655 feet (DSX-1) 5: -7.5db (CSU) 6: -15db (CSU) 7: -22.5db (CSU)
Framing:
ccs - Common Channel Signaling (CCS) over a digital PRI. It is the transmission of signaling information out of the information band. ISDN Q.931 signaling is referred to as a CCS
Coding:
hdb3 - high density bipolar of order 3 - один из способов линейного кодирования, применяется при передаче данных на расстояние по цифровому каналу связи
crc4: Cyclic redundancy check - алгоритм нахождения контрольной суммы, предназначенный для проверки целостности данных
termtype: setting is for TE or NT (the default is TE), TE - cpe signallingget and get timing from the remote party, NT - provide timing to the remote party
# cat /etc/dahdi/system.conf
# Autogenerated by /usr/sbin/dahdi_genconf on Wed Apr 25 10:11:25 2018 # 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: D115/0/1 "D115 (E1/T1) Card 0 Span 1" (MASTER) CCS/HDB3/CRC4 ClockSource # span=1,1,0,ccs,hdb3,crc4 span=1,1,0,ccs,hdb3 # termtype: te bchan=1-15,17-31 dchan=16 alaw=1-15 alaw=17-31 echocanceller=mg2,1-15,17-31 # Global data loadzone = ru defaultzone = ru
# cat /etc/asterisk/dahdi-channels.conf
... ;Порядок строк играет роль!!! group=0 context=default switchtype = euroisdn signalling = pri_cpe overlapdial=incoming channel => 1-15,17-31 ...
# dahdi_scan -vvvvv # dahdi_cfg -v
!!!! Иногда помогает “холодный” рестарт !!!!
# dahdi_scan -vvvvv # service asterisk restart
e1*CLI> dahdi show status
Description Alarms IRQ bpviol CRC Fra Codi Options LBO D115 (E1/T1) Card 0 Span 1 OK 0 0 771 CCS HDB3 CRC4 0 db (CSU)/0-133 feet (DSX-1)
# cat /etc/asterisk/extensions.conf
...
exten => _1XX,1,Dial(DAHDI/G0/${EXTEN},,tT)
exten => _4XX,1,Dial(SIP/${EXTEN})
[from-pstn]
exten => _4XX,1,Goto(default,${EXTEN},1)
e1*CLI> pri set debug on span 1 ...