How to Block Spam Calls on a Business Phone System
Block spam and nuisance calls on your office phone system with a PBX blacklist, caller ID routing and a simple monthly routine.
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Tag: PBX security
PBX Backup and Failover: Keep Your Phones Running in an Outage
Plan PBX backup and failover in four layers: scheduled configuration backups, UPS power, trunk failover across providers and hardware recovery.
EPABX AMC: What a PBX Maintenance Contract Should Cover
What a good EPABX AMC covers: preventive visits, firmware, backups, response times, spares and remote support, with a checklist and questions for…
What is SIP? SIP Protocol Explained for Business Phone Systems
What SIP is, how a SIP call works (REGISTER, INVITE, RTP), SIP vs VoIP, ports 5060 and 5061, SIP trunks vs extensions,…
PBX Security: How to Prevent Toll Fraud on Your Phone System
How PBX toll fraud happens and how to prevent it: call restrictions, strong SIP security, voicemail PINs, admin permissions, monitoring and backups.