VOIP example URI format

[Philips1]

I'm trying to test the VOIP example by linphone using the ESP32-LyraT-Mini V1.2 hardware but encountered this error message when I execute the VOIP application:

I (13278) AUDIO_HAL: Codec mode is 3, Ctrl:1
I (13288) VOIP_EXAMPLE: [ 3 ] Create and start input key service
I (13288) VOIP_EXAMPLE: [ 4 ] Create SIP Service
W (13288) SIP: Invalid scheme
I (13298) VOIP_EXAMPLE: [ 5 ] Create decoder and encoder pipelines
I (13298) VOIP_EXAMPLE: SIP_EVENT_REQUEST_NETWORK_STATUS
E (13308) SIP: Error transport is NULLED
I (13308) SIP: SIP task stoped

Wifi was connected with no error. I entered "sip:name@sip.linphone.org" as the SIP URI in menuconfig. Does anyone know if the URI format I entered was correct? Any ideas is appreciated. Many thanks.

-Gary

[Captainavi]

I have the voip registration working with a local Yate server.
My SIP URI is "udp://200:002@10.0.0.50:5060"

For standard port and network protocol.
udp://(SIP-USR):(SIP-PASWD)@(SERVER-IP):5060

-Avi