[cisco-voip] Fax debuging?

Sean Watkins sean at northrock.bm
Tue Apr 17 15:08:59 EDT 2007


Hi Kris,
 
Checked that. The bearer caps are indeed 
 
 
        Bearer Capability i = 0x8090A2 
                Standard = CCITT 
                Transer Capability = Speech  
                Transfer Mode = Circuit 
                Transfer Rate = 64 kbit/s 
 
Very strange.
 
Sean
 
 

--
Sean Watkins
North Rock Communications
Phone: 441-540-4102
  

 


________________________________

	From: Kris Seraphine [mailto:baryonyx5 at gmail.com] 
	Sent: Tuesday, April 17, 2007 2:58 PM
	To: Sean Watkins
	Cc: ciscovoip
	Subject: Re: [cisco-voip] Fax debuging?
	
	
	This is a shot in the dark but, if the calls are being rejected,
maybe the bearer cap for these calls is not being accepted by the
carrier.  If you debug isdn q931 you'll see the bearer capabilities for
the call.  A normal voice call is usually 0x8090A2.  If the fax calls
show a different value you could use the bearer-cap speech command on
the voice port. 
	
	
	On 4/17/07, Sean Watkins <sean at northrock.bm> wrote: 

		Hi,
		
		I have an interesting problem. I have a specific carrier
that I connect
		via PRI which on cisco eqpt or another vendors TDMoIP
gear, cannot seem
		to pass any faxes.
		
		Phone calls complete succesfully, but faxes no. Faxes to
other carriers 
		on the same eqpt (either cisco or TDMoIP) work ok. So,
its pretty much
		something in particular with this carrier.
		
		
		Any suggestions? In talking to the carrier they are not
doing anything
		funky but I am at a loss as to why faxes do not complete
on that 
		specific carrier. They are the typical carrier where of
course nothing
		is their problem ...
		
		
		I've checked ----
		
		        1) Clean T1s
		        2) Good Timing
		        3) Verified the Cisco gear works as I get the
same problems on 
		another piece of eqpt
		
		
		What else is there to check? Is there any fax
diagnostics box I can get?
		
		Any  suggestions short of firing this carrier?
		
		
		Sean
		
		
		
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	-- 
	kris seraphine 

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