All users’ mobile APPs will receive incoming call notifications at the same time.
please download here:

General_VTOXXXXD-G-S2_MultiLang_PN_PAAS_SIP_Asia_V4.600.0000000.0.R.220813.bin

Note.
If need different users’ mobile APPs will receive corresponding incoming call notifications.
(Monitor required. If no monitor, licenses are required. Please contact sales to purchase a license)
Please download the version V4.511 firmware below:

General_VTOXXXXD-G-S2_MultiLang_PN_PAAS_SIP_V4.511.0000000.0.R.220105.bin