[asterisk-ss7] Problems with chan_ss7-0.8.4

Kristian Nielsen knielsen at mysql.com
Mon Nov 6 00:03:16 MST 2006

"Robert Kenton" <robert.kenton at gmail.com> writes:

> I've tested with just 60 channels, and even when the 60 channels are
> not fully used, appears too much "mtp.c: MTP2 bitstream frame format
> error, entering octet counting mode..." and after that some of these
> messages, the link goes down.

Did you start Asterisk as user root, so it can use real-time priorities?

The chan_ss7 architecture splits the work-load in two parts, only one of which
has real-time requirements, and runs the critical part at a high real-time
priority to make sure it gets sufficient CPU. However, Linux real-time
priorities require root privileges.

BTW, doing 60 calls within a single second, you might want to calculate
whether you have sufficient bandwidth on your signalling link. But even so, it
should not cause the MTP2 layer to drop.

 - Kristian.

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