[cisco-voip] Cause 0x80AA Switching Equipment Congestion

[Andy]

I've had something similar
on a new install the provider had installed 8 x E1 circuits but hadn't 
upgraded the infrastructure in their Exchange to cope with the 
additional traffic.

Rgds

Andy


On 16/03/2012 16:13, Dave Wolgast wrote:
> Has anyone seen this before? We are not able to send/receive calls via 
> our PRIs and get this cause code. Here is the full ISDN q931 output:
>
> Mar 16 11:06:38.652: ISDN Se0/1/0:23 Q931: RX <- SETUP pd = 8  callref 
> = 0x0283
>         Bearer Capability i = 0x8090A2
>                 Standard = CCITT
>                 Transfer Capability = Speech
>                 Transfer Mode = Circuit
>                 Transfer Rate = 64 kbit/s
>         Channel ID i = 0xA98381
>                 Exclusive, Channel 1
>         Calling Party Number i = 0x2183, '8168779065'
>                 Plan:ISDN, Type:National
>         Called Party Number i = 0x80, '7777'
>                 Plan:Unknown, Type:Unknown
> Mar 16 11:06:38.652: ISDN Se0/1/0:23 Q931: Received SETUP  callref = 
> 0x8283 callID = 0x240D switch = primary-ni interface = User
> Mar 16 11:06:38.656: ISDN Se0/1/0:23 Q931: TX -> RELEASE_COMP pd = 8 
>  callref = 0x8283
>         Cause i = 0x80AA - Switching equipment congestion
> Mar 16 11:06:39.812: ISDN Se0/1/0:23 Q931: RX <- SETUP pd = 8  callref 
> = 0x0284
>         Bearer Capability i = 0x8090A2
>                 Standard = CCITT
>                 Transfer Capability = Speech
>                 Transfer Mode = Circuit
>                 Transfer Rate = 64 kbit/s
>         Channel ID i = 0xA98381
>                 Exclusive, Channel 1
>         Calling Party Number i = 0x2183, '8168779065'
>                 Plan:ISDN, Type:National
>         Called Party Number i = 0x80, '7777'
>                 Plan:Unknown, Type:Unknown
> Mar 16 11:06:39.812: ISDN Se0/1/0:23 Q931: Received SETUP  callref = 
> 0x8284 callID = 0x240E switch = primary-ni interface = User
> Mar 16 11:06:39.816: ISDN Se0/1/0:23 Q931: TX -> RELEASE_COMP pd = 8 
>  callref = 0x8284
>         Cause i = 0x80AA - Switching equipment congestion
>
> Some research shows a potential issue with bad DSPs, but that doesn't 
> appear to be the case here.
>
> Any help is appreciated.
>
> -- 
> Dave Wolgast
> Livonia, NY
>
>
>
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