[asterisk-users] SIP 18x Messages

[Kevin P. Fleming]

Tim King wrote:
> When I make an outbound call I hear a half of a ring and than silence
> until the call opens up.
> 
> It seems asterisk is sending a 183 after the 180 message. My CPE device
> does not support multiple 18x messages in the same call setup.  When we
> receive the 180 we present ring back to the phone, but when we receive
> the 183 we get confused and stop the ring back tone, but do not open up
> the early media path for the ring back to be played from the network.
>  
> In Metaswitch the configuration knob to correct this is “Superfluous 18x
> messages”, I don’t know what it takes to configure Asterisk that way.
> Can anyone help with this.

Check out the 'progressinband' configuration option.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
skype: kpfleming | jabber: kpfleming at digium.com
Check us out at www.digium.com & www.asterisk.org