Asterisk nonce length during subscribe

Hi,

I’m using snom phone 8.7.5.35 and asterisk 13.12.1. (freepbx 13.0.190.12)

During each subscribe, the phone complains about the nonce length used by asterisk:

process_registrar_packet: 401 needs 128 bit nonce

Is it possible to force that nonce length ?

Thanks,
André.