[Freeswitch-users] freetdm error message

[Moises Silva]

On Tue, Aug 2, 2011 at 7:45 AM, ovvenkat <ovvenkatesan at 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 at sangoma.com