Unknown number for IAX user

Hello,
Please help me with the below topic.

Every time when I try to call from IAX user 2000 to IAX user 2001, on the 2001 phone screen appears that I’ve been called by “Unknown”, but when I call from 2001 to the IAX user 2000, the caller number appears.
This is my log file when I calling from 2000 to 2001
WARNING[2572]: res_pjsip_pubsub.c:3309 pubsub_on_rx_publish_request: No registered publish handler for event presence
[Feb 4 20:51:17] WARNING[2572]: res_pjsip_pubsub.c:776 subscription_get_handler_from_rdata: No registered subscribe handler for event presence.winfo
== Spawn extension (Iaxfunctions, 2001, 1) exited non-zero on ‘IAX2/2000-3440’
[Feb 4 20:51:25] WARNING[2572]: res_pjsip_pubsub.c:776 subscription_get_handler_from_rdata: No registered subscribe handler for event presence.winfo
[Feb 4 20:51:25] WARNING[2572]: res_pjsip_pubsub.c:3309 pubsub_on_rx_publish_request: No registered publish handler for event presence
andrada-VirtualBox*CLI>

The problem was that I forgot to set up the callerID and the caller number in the softphones.

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