Hi, 
Thank you for your response. 
Here I have created 2 pcap files. 

1. isdn.pcap file captured only signaling status. 

2. isdn_oncall.pcap file captured at the time of outbound call. 
    (call got disconnected)

Since Its live server, plz reply me ASAP. 

Here is the System configuration. 

freeswitch@192.168.1.110@internal> version
FreeSWITCH Version 1.0.head (git-a7c6fa9 2011-08-02 00-27-38 -0500)


[root@localhost var]# wanrouter status
Devices currently active:
        wanpipe1


Wanpipe Config:

Device name | Protocol Map | Adapter  | IRQ | Slot/IO | If's | CLK | Baud rate |
wanpipe1    | N/A          | A101/1D/A102/2D/4/4D/8| 21  | 0       | 1    | N/A | 0         |

Wanrouter Status:

Device name | Protocol | Station | Status        |
wanpipe1    | AFT TE1  | N/A     | Connected     |


[root@localhost var]# wanrouter hwprobe
-------------------------------
| Wanpipe Hardware Probe Info |
-------------------------------
1 . AFT-A101-SH : SLOT=0 : BUS=17 : IRQ=21 : CPU=A : PORT=1 : HWEC=0 : V=37

Card Cnt: A101-2=1


[root@localhost var]# wanpipemon -i w1g1 -c Ta

***** w1g1: E1 Rx Alarms (Framer) *****

ALOS:   OFF     | LOS:  OFF
RED:    OFF     | AIS:  OFF
LOF:    OFF     | RAI:  OFF ( some time its ON )



***** w1g1: E1 Rx Alarms (LIU) *****

Short Circuit:  OFF
Open Circuit:   OFF
Loss of Signal: OFF

***** w1g1: E1 Tx Alarms *****

AIS:    OFF     | YEL:  OFF


***** w1g1: E1 Performance Monitoring Counters *****

Line Code Violation     : 1373
Far End Block Errors    : 0
CRC4 Errors             : 0
FAS Errors              : 2822


Rx Level        : > -2.5db





Regards,
Venkat. 



On Wed, Aug 3, 2011 at 8:06 AM, Moises Silva <moises.silva@gmail.com> wrote:
On Tue, Aug 2, 2011 at 7:45 AM, ovvenkat <ovvenkatesan@gmail.com> wrote:
> Hi to all,
>
> In my "fs_cli"  I am getting bellow message very frequently.
> Can you any one help me where is the error?
>
> 2011-08-02 17:11:33.028452 [INFO] ftmod_sangoma_isdn_stack_rcv.c:995
> sng_isdn->s1: Invalid Q.921/Q.931 frame - ignoring len:1
> 2011-08-02 17:11:33.048455 [INFO] ftmod_sangoma_isdn_stack_rcv.c:995
> sng_isdn->s1: Invalid Q.921/Q.931 frame - ignoring len:1
> 2011-08-02 17:11:33.048455 [INFO] ftmod_sangoma_isdn_stack_rcv.c:995
> sng_isdn->s1: Invalid Q.921/Q.931 frame - ignoring len:1
> 2011-08-02 17:11:33.068455 [INFO] ftmod_sangoma_isdn_stack_rcv.c:995
> sng_isdn->s1: Invalid Q.921/Q.931 frame - ignoring len:1
> 2011-08-02 17:11:33.068455 [INFO] ftmod_sangoma_isdn_stack_rcv.c:995
> sng_isdn->s1: Invalid Q.921/Q.931 frame - ignoring len:1
> 2011-08-02 17:11:33.068455 [INFO] ftmod_sangoma_isdn_stack_rcv.c:995
> sng_isdn->s1: Invalid Q.921/Q.931 frame - ignoring len:1

That really looks like some sort of garbage on the line (although is
not strictly only garbage since they seem to be valid HDLC frames).

How often do you get this? the word "frequently" means nothing from an
engineering point of view. Every minute you get a burst of these? or
is it a constant flow? can you receive/place calls despite this
message?

Try taking a pcap file when you're receiving those messages:
http://wiki.sangoma.com/wanpipe-wireshark-pcap-pri-bri-wan-t1-e1-tracing

Moises Silva
Senior Software Engineer, Software Development Manager
Sangoma Technologies Inc. | 100 Renfrew Drive, Suite 100, Markham ON
L3R 9R6 Canada
t. 1 905 474 1990 x128 | e. moy@sangoma.com

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--

If you have come to help me, you are wasting your time.
If you have come to because your liberation is bound up in mine, we can work together.

 
Regards
Venkatesan OV.