Hi Christoph,

sorry i overlooked that. Seems okay to me. So IMHO its "okay" in SIP.

Your Carrier didnt like it.

First - i would try to ask the Carrier -

The Error Message "503 Service Unavailable-No Bandwidth Available" seems to me like a blocking rule on the carrier side.

Could be mixed +e164 (in To) vs e164 in From/PAI/whatever - the Contact-Header or something else.

The other way is to capture a working outbound call and then try to check what's different.

Best

Karsten

Am Fr., 26. Nov. 2021 um 11:18 Uhr schrieb Christoph Russow <russow@emtex.de>:

hi,

thats what i did on our application servers (freeswitch gateway config).
kamailio routes the calls as wanted but the carrier rejects it (see pcap
file in first email).