[Asterisk-Dev] TDM analog cards stop being able to detect off-hook after a few weeks

[John Matthews]

We presently have 3 TDM cards installed in separate systems. Each one
works beautifully (great voice quality) for about 2 weeks then stops
being able to detect off-hook. By this I mean that the FXO modules stop
being able to detect incoming phone calls and the FXS modules ring the
phone but the phone carries on ringing after someone picks up the
handset. Reloading the wcfxs seems to sort the cards out. Please note
that asterisk carries on working for calls not involving the TDM cards.
A "zap show channel" of a card that has failed is shown below.

 

crossnet*CLI> zap show channel 35

Channel: 35I>

File Descriptor: 18

Span: 2t*CLI>

Extension: I>

Context: fasttrackcomms.com.au

Caller ID string: "Analog #4" <5699>

Destroy: 0LI>

Signalling Type: FXO Kewlstart

Owner: <None>

Real: <None>>

Callwait: <None>

Threeway: <None>

Confno: -1LI>

Propagated Conference: -1

Real in conference: 0

DSP: not*CLI>

Relax DTMF: no

Dialing/CallwaitCAS: 0/0

Default law: ulaw

Fax Handled: no

Pulse phone: no

Echo Cancellation: 128 taps, currently OFF

Actual Confinfo: Num/0, Mode/0x0000

Actual Confmute: No

 

I can't see anything unusual about it. Anyone got any ideas?

 

John Matthews

 

 

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