BRI Cards FAQ

Estimated reading: 16 minutes 181 views

Q1, You can not make calls from asterisk

there are few reasons why you can not make calls:
1) check your extensions from your asterisk side, make sure your sip is ready to make calls, and SIP is with a right context what you put in extensions.conf
2) your qozap.ko or hfcmulti.ko does not boot up(leds are off).
3) leds are up and card driver has boot up properly, but the zapata.conf is
, so asterisk does not boot up properly,
please check by run: zap show channels
if is empty or no such command, you should check your zapata.conf/misdn.conf
4) if you are using mISDN, please make sure the misdn stack is up and active.
5) You maybe recompile your zaptel/mISDN and asterisk again.

Q2, How do you adjust the volume of voice for BRI cards?

You can edit rxgain and txgain in chan_misdn or zapata.conf.

Q3, list of drivers of BRI cards

Bri cards can work with these drivers:
1) mISDN-1_1_X， links:
http://wiki.openvox.cn/index.php/OpenVox_B200P_User_Manual_for_mISDN
http://www.openvox.cn/download/user_manuals_english_version
/B200P_B200E_B400P_B400E_User_Manual_mISDN.pdf
2) mISDN v2
http://www.openvox.cn/download/user_manuals_english_version
/B200%20B200E%20B400P%20B400E-User-Manual-mISDNv2.pdf
http://wiki.openvox.cn/index.php/OpenVox_B200P_User_Manual_for_mISDN(v2)
3) Bristuff
http://www.openvox.cn/download/user_manuals_english_version
/B200P_B400P_B400E_User_Manual_bristuff.pdf
http://www.openvox.cn/download/user_manuals_english_version
/B800P_User_Manual_bristuff.pdf
4) Dahdi wcb4xxp
http://bbs.openvox.cn/viewthread.php?tid=781&extra=page%3D1
5) isdn4bsd
http://forums.digium.com/viewtopic.php?t=21080
http://turbocat.net/~hselasky/isdn4bsd/
Before implementing one of these drivers, please make an investigation for your business requirement.

Q4, B200P_B400P_B800P pin assignment

if you want to check the pin assignment, please refer this:
http://bbs.openvox.cn/viewthread.php?tid=667&extra=page%3D2

Q5, Use PCM connection with OpenVox BRI cards.

if you want to use PCM cable to connect with the two BRI cards,
please refer this link:
http://bbs.openvox.cn/viewthread.php?tid=428&extra=page%3D3

Q6, netjetpci causes a problem with mISDN(B400P)+Zaptel(A400P)

If you conbine the bri card and analog card, please remove the netjetpci,
this is a solution to solve the problem

Q7, How can you open the debug for mISDN/asterisk?

1) You can edit the file logger.conf under /etc/asterisk,
enable the debug or error, those message will be stored under
/var/log/asterisk
2) you also can start your asterisk in this way:
asterisk -vvvvvvvvgc -d
3) if you want to debug the mISDN, please enable the debug in mISDN.conf

Q8, How can i check the IRQ of BRI cards?

please run the command:
cat /proc/interrupts
you should see the IRQs, Make sure the card has OWN IRQ, Do NOT share with other devices.
more details, please check from here:
http://www.voip-info.org/wiki/view/Asterisk+PCI+bus+Troubleshooting

Q9, the definations of NT and TE

the bri cards support NT and TE mode. you can refer these links for the definitions:
http://www.techfest.com/networking/wan/isdn.htm
http://www.cisco.com/en/US/tech/tk652/tk653
/technologies_tech_note09186a0080111b16.shtml
http://www.asteriskguru.com/tutorials/bri.html

Q10, Sound Quality Problems with Analog cards

please refer this link:
http://www.asteriskguru.com/tutorials/pci_irq_apic_tdm_ticks_te410p_te405p_noise.html

Q11, MISDN with asterisk/trixbox/elastix

please refer these links:

http://misdn.org/index.php/MISDN_with_Asterisk
http://misdn.org/index.php/FAQ_chan_mISDN
http://www.voip-info.org/wiki/view/chan_misdn
http://trixbox.org/wiki/chan-misdn
http://www.openvox.cn/download/other_docs
/Integration%20B100P%20B200P%20B400P%20B800P%20with%20mISDN.pdf
http://www.servercare.nl/Lists/Posts/Post.aspx?ID=34
http://www.freepbx.org/forum/freepbx/users/elastix-and-idsn

Q12, I am hearing an echo. What can I do to fix this?

please refer these links:
http://kb.digium.com/entry/1/
http://www.voip-info.org/wiki/view/Asterisk+echo+cancellation

Q13, When will the LED’s light up on my BRI cards

Due to the difference of drivers, the LEDs of cards are different.
1) If the drivers are loaded correctly, the LEDs are in RED color.
2) If the layer1 and layer2 are up, and a conversation is established, the leds will be in GREEN.
3) B100P does not support LEDs

Q14, Why is my card getting an IRQ miss?

Each peice of hardware takes 1,000 interrupts per second. When, for some reason the cards get less than this, an IRQ miss occurs. You can see if the card is missing interrupts using ‘zttool.’

IRQ misses can cause different problems with Asterisk. Symptoms of IRQ misses are bad audio quality or perhaps PRI errors, although IRQ misses will not cause alarms. Also DTMF detection not working is something that can be caused by IRQ misses as well.

Several common things that contribute to IRQ misses are: -Running the X window system -Shared IRQs -No hard drive DMA -Hard drive DMA too high (shoot for udma3) -Running serial terminals or frame buffers

To check for shared IRQs you can run:

cat /proc/interrupts

 	CPU0

0 10756672 XT-PIC timer 2 0 XT-PIC cascade 5 10812879 XT-PIC uhci_hcd, uhci_hcd, wctdm 10 226219 XT-PIC t1xxp, CS46XX 11 1550046 XT-PIC eth0, nvidia 12 387234 XT-PIC i8042 14 32641 XT-PIC ide0 15 18 XT-PIC ide1 NMI 0 LOC 10757616 ERR 40481 MIS 0

Notice the T100P card sharing with the sound card, and the TDM400P card is sharing with the USB controller. This will most likely cause problems. If you are not using any USB devices that would probably be ok, but it would be best to disable USB or get the card on it’s own IRQ.

There are several ways to move cards to their own IRQ.

   -Turn on APIC
   -Tweak BIOS settings
   -Try a different PCI slot
   -Use setpci

refer this link from digium: http://kb.digium.com/entry/63/

Q15, Why am I having DTMF detection problems?

Zaptel DTMF Detection Problems
DTMF detection problems can be caused by a number of different factors. The most common is running the X Windows System. Another cause of DTMF detection problems is the relaxdtmf option in Zapata.conf. It may need to be turned on or off. If you need to force all DTMF detection to be done in software, you can set vpmdtmfsupport to 0 in wctdm24xxp.c or wct4xxp.c and recompile, or you can specify it as a kernel module option at runtime.

SIP DTMF Detection Problems
If you are having problems sending DTMF digits amd are using a SIP phone, make sure the dtmfmode they have set is the same on the phone and in Asterisk. Also make sure you are not sending both inband and out-of-band (rfc2833) tones.

Q16, I am getting error messages about PCI Master Aborts. What is wrong?

This is a very rare case. When your computer’s PCI subsystem experiences serious problems with OpenVox’s cards upon initialization of the card, Linux will print out scrolling “PCI Master Abort” messages. What you should do is go into your system’s BIOS, and turn off your motherboard’s PNP (plug and play) feature. If this does not resolve your issue, You should contact OpenVox support.

Q24, How do you report a problem

In order to solve customer’s problems very effective and efficiency,
when seeking a help from us, please give these information:
1) versions of kernel and Linux distribution
2) versions of asterisk and zaptel/dahdi
3) the name of cards used in your system
4) debug and error information from your system and asterisk
5) sending us zaptel(zaptel.conf and zapata.conf) or dahdi (system.conf and chan_dahdi.conf)
configuration files and extension.conf
6) after loading the driver, run the command: demsg and send the information to us
7) sending us the result of the command: cat /proc/interrupts
8) sending us the message of asterisk console when you making a call
9) inform the protocols you are using in your system
10) send us a working ssh account with root permission if you need us to check the system.
11) make a backup for your important files
12) describe the problem in details
13) if you are using mISDN, please open the debug mode and run dmesg to get the
error or log message.

Q25, Disable Hisax and isdn in Centos/debian

If you are running a BRI card in the centos/FC or debian, please remove
Hisax and ISDN service from your system, add those services or modules into the system black list.
those packages will be conflict with mISDN/Bristuff/wcb4xxpdriver.
more details, please check the link:
http://pbxinaflash.com/forum/showthread.php?t=1418

Q26, How to debug brisutff/mISDN

When loading the qozap.ko/zaphfc.ko with a debug mode,
please loadding the driver in this way:
modprobe qozap,ko debug=1 // open the debug and check the /var/log/message
if you run misdn, please enable the debug in misdn.conf

Q27, How to install Octasic SoftEcho

please refer these links:
http://www.openvox.cn/download/user_manuals_english_version/Octvqeug_5000.pdf
http://www.octasic.com/en/products/softecho/softecho_asterisk.php
http://www.octasic.com/en/products/softecho/support.php

Q28, Howto: OSLEC echo canceling + DAHDI 2.1.0.4 + Asterisk 1.4

please refer this:
http://www.asterisk.org/forum/viewtopic.php?p=125314&sid=9515c7b03cb14dc698e89467c3d49a86

Q29, Why are you unable to call out with Asterisk 1.4.22?

If you are using wctdm or opvxa1200 with Zaptel and Asterisk 1.4.22 then there is a known issue with outbound calls. The reason you are not able to call out is because Asterisk 1.4.22 has a new feature which detects if a analog line is plugged in or not, but this feature only works with Dahdi. So to fix the issue you can do one of the following.
edit the file under /asterisk-1.4.22、channels/chan_dahdi.c” find this line

ifdef DAHDI_CHECK_HOOKSTATE return 0;
else return 1;

Change the “0” to a “1”

ifdef DAHDI_CHECK_HOOKSTATE return 1;
else return 1;

Q30, install Asterisk zaphfc

please refer these links:
http://www.voip-info.org/wiki/view/Asterisk+zaphfc+install
http://www.openvox.cn/download/user_manuals_english_version/B100P_User_Manual_bristuff.pdf

Q31, Install bri card and analog cards in one system

if you want to install analog cards and bri cards in one system, it can be done in two ways:
1) install bristuff for both of analog cards and bri cards.
2) install mISDN with bri cards and zaptel with analog cards
please refer this link:
http://www.howtoforge.com/asterisk-zaptel-libpri-misdn-asterisk-addons-asterisk-gui-on-debian-etch.

Q32, To get the quick support, what information about the system I should send?

Versions of kernel and Linux distribution
Versions of asterisk and zaptel/dahdi
Model of OpenVox products
Debug and error information from your system and asterisk
Zaptel(zaptel.conf and zapata.conf) or dahdi (system.conf and chan_dahdi.conf) configuration files and extension.conf if your have trouble with dialplan
After loading the driver, run the command: demsg and send the information to us
Output of the command: cat /proc/interrupts
Message in asterisk console when you making a call, if you have trouble to drop/receive calls.
Protocols you want to use(FXS,FXO,PRI..)
Ssh account with root permission if you need us to check the system.
Make a backup for your important files
Describe the problem in details
Serial numbers of OpenVox’s products

Q33, Disconnect cause codes

Hex	Decimal	Cause
0x1	1	Unallocated or unassigned number
0x2	2	No route to specified transit network (Transit Network Identity)
0x3	3	No route to destination
0x4	4	Send special information tone
0x5	5	Misdialled trunk prefix
0x6	6	Channel unacceptable
0x7	7	Call awarded and being delivered in an established channel
0x8	8	Prefix 0 dialed but not allowed
0x9	9	Prefix 1 dialed but not allowed
0xA	10	Prefix 1 not dialed but required
0xB	11	More digits received than allowed, call is proceeding
0x10	16	Normal call clearing
0x11	17	User busy
0x12	18	No user responding
0x13	19	T.301 expired: – User Alerted, No answer from user
0x15	21	Call rejected
0x16	22	Number changed to number in diagnostic field.
0x17	23	Reverse charging rejected
0x18	24	Call suspended
0x19	25	Call resumed
0x1A	26	Non-selected user clearing
0x1B	27	Destination out of order
0x1C	28	Invalid number format or incomplete address
0x1D	29	EKTS facility rejected by network
0x1E	30	Response to STATUS ENQUIRY
0x1F	31	Normal, unspecified
0x21	33	Circuit out of order
0x22	34	No circuit/channel available
0x23	35	Destination unattainable
0x24	36	Out of order
0x25	37	Degraded service
0x26	38	Network out of order
0x27	39	Transit delay range cannot be achieved
0x28	40	Throughput range cannot be achieved
0x29	41	Temporary failure
0x2A	42	Switching equipment congestion
0x2B	43	Access information discarded
0x2C	44	Requested circuit channel not available
0x2D	45	Preempted
0x2E	46	Precedence call blocked
0x2F	47	Resource unavailable, unspecified
0x31	49	Quality of service unavailable
0x32	50	Requested facility not subscribed
0x33	51	Reverse charging not allowed
0x34	52	Outgoing calls barred
0x35	53	Outgoing calls barred within CUG
0x36	54	Incoming calls barred
0x37	55	Incoming calls barred within CUG
0x38	56	Call waiting not subscribed
0x39	57	Bearer capability not authorized
0x3A	58	Bearer capability not presently available
0x3F	63	Service or option not available, unspecified
0x41	65	Bearer service not implemented
0x42	66	Channel type not implemented
0x43	67	Transit network selection not implemented
0x44	68	Message not implemented
0x45	69	Requested facility not implemented
0x46	70	Only restricted digital information bearer capability is available
0x4F	79	Service or option not implemented, unspecified
0x51	81	Invalid call reference value
0x52	82	Identified channel does not exist
0x53	83	A suspended call exists, but this call identity does not
0x54	84	Call identity in use
0x55	85	No call suspended
0x56	86	Call having the requested call identity has been cleared
0x57	87	Called user not member of CUG
0x58	88	Incompatible destination
0x59	89	Non-existent abbreviated address entry
0x5A	90	Destination address missing, and direct call not subscribed
0x5B	91	Invalid transit network selection (national use)
0x5C	92	Invalid facility parameter 93 Mandatory information element is missing
0x5D	93	Message type non-existent or not implemented
0x5F	95	Invalid message, unspecified
0x60	96	Mandatory information element is missing
0x61	97	Message type non-existent or not implemented
0x62	98	Message not compatible with call state or message type non-existent or not implemented
0x63	99	Information element nonexistent or not implemented
0x64	100	Invalid information element contents
0x65	101	Message not compatible with call state
0x66	102	Recovery on timer expiry
0x67	103	Parameter non-existent or not implemented – passed on
0x6F	111	Protocol error, unspecified
0x7F	127	Internetworking, unspecified
0x80+	128 orhigher	Proprietary diagnostic code (not necessarily bad). Typically used to pass proprietary control or maintenance messages between multiplexers.

Q34, What to do when Telephony Cards are not Recognized

Run lspci to check if the OS detects, if the card is not detected, you may want to move the card to another PCI/PCIex slot
Run dahdi_tool to confirm that DAHDI loads the module, if the application does not detect the card, you may need to upgrade the version of DAHDI and make sure that the module files loads all the modules
Check the configuration to confirm it is set up properly or run dahdi_genconf to auto-generate the configuration
Check /etc/asterisk/chan_dahdi.conf for dahdi-channels.conf. If it does not exist, add #include dahdi-channels.conf
After this is done, restart asterisk

NOTE: You may need to comment out all other includes if you run into issues and make sure only chan_dahdi.conf and dahdi-channels.conf are included