[Asterisk-Users] Unable to call H323 phones via asterisk

[Tilghman Lesher]

On Wednesday 23 April 2003 01:40 pm, Michael Rose wrote:
> I receive the following error when I try to call another H323
> extension from another H323 when going through *.
>
> NOTICE[27669]: File channel.c, Line 1325 (ast_set_read_format):
> Unable to find a path from 1 to 8
> NOTICE[27669]: File channel.c, Line 1296 (ast_set_write_format):
> Unable to find a path from 8 to 1
> WARNING[27669]: File chan_h323.c, Line 528 (oh323_write): Asked to
> transmit frame type 1, while native formats is 8 (read/write = 8/8)
>
> I'm not sure what it means by "...path from 1 to 8". Can anyone
> explain what's happening here?
>
> I'm using chan_h323.so, g711/g723 and GnuGK with * registered to
> GnuGK. The IP phones can call each other directly without any
> problems. Each IP phone can call into * without any problems as
> well. I only seem to have an issue with calling each phone via *.

It's attempting to convert between format 8 (alaw) and format 1
(g.723).  G.723 is encumbered by patents and license fees.  You'll
need to purchase a license for each concurrent usage of this codec.

Of course, if you use a codec which is not encumbered by patents
and is supported by Asterisk, you won't need to pay any license fees.

-Tilghman