dahdi with isdn nt_mode, phone no signal still.

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Asterisk Users 4 Comments

Hi people!
I have managed to set up asterisk 1.8.5. with my 2 ISDN HFC boards on
asterisk. On which DAHDI tells me also properly that both of my boards
are registered, one in TE and the other on in NT mode.

Calls do successfully come inside, but I want to connect my ISDN phone
at the board, but the phone is death. What did I make wrong?!

dahdi_scan:
office tamer # dahdi_scan
[1]
active=yes
alarms=OK
description=HFC-S PCI A ISDN card 0 [TE]
name=ZTHFC1
manufacturer=Cologne Chips
devicetype=HFC-S PCI-A ISDN
location=PCI Bus 01 Slot 01
basechan=1
totchans=3
irq=17
type=digital-TE
syncsrc=0
lbo=0 db (CSU)/0-133 feet (DSX-1)
coding_opts=AMI
framing_opts=CCS
coding=AMI
framing=CCS
[2]
active=yes
alarms=OK
description=HFC-S PCI A ISDN card 1 [NT]
name=ZTHFC2
manufacturer=Cologne Chips
devicetype=HFC-S PCI-A ISDN
location=PCI Bus 01 Slot 02
basechan=4
totchans=3
irq=21
type=digital-NT
syncsrc=0
lbo=0 db (CSU)/0-133 feet (DSX-1)
coding_opts=AMI
framing_opts=CCS
coding=
framing=CAS
office tamer #

and dahd status in asterisk:

office*CLI> dahdi show status
Description Alarms IRQ bpviol CRC4
Fra Codi Options LBO
HFC-S PCI A ISDN card 0 [TE] OK 0 0 0
CCS AMI 0 db (CSU)/0-133 feet (DSX-1)
HFC-S PCI A ISDN card 1 [NT] OK 0 0 0
CAS Unk 0 db (CSU)/0-133 feet (DSX-1)

TE-mode works fine so far.

4 thoughts on - dahdi with isdn nt_mode, phone no signal still.

  • Afaik ISDN phones need power to work. You would need a HFC-S card with a
    power plug where you can hook up power from the computer’s power supply
    so the card can power the phone. Like Sangoma’s B700. Alternatively
    perhaps you could try to power the phone through an NT1?

    Would you mind sharing which version of DAHDI you used and where you got
    the HFC-S patch?

    Regards,
    Patrick

  • Hi Patrick!
    Now i got it…..

    I am using Gentoo Linux, Asterisk 1.8.5 and Dahdi 2.4.1.

    The patches are automatically integrated at Gentoo. I didn’t have to
    patch anything. That did the community.

    Another question, I really don’t like to buy a new ISDN phone with
    external power connector, can I make the power supply for the phone
    somehow?!

    Tamer

    Am 30.08.2011 20:05, schrieb Patrick Lists:

  • Nope sorry. Check the messages in the asterisk cli or logs. Maybe it
    tells you what is going on.

    Regards,
    Patrick