Extension Management
Complete extension lifecycle management with contact association, alias directories, BLF/presence monitoring, per-extension voicemail, call forwarding rules (unconditional, busy, no-answer), multi-device support, SIP configuration and automatic provisioning for IP phones.
⚙️How it works
Create extensions with one or more aliases (short numbers) for easy dialing from any phone or softphone
Associate each extension with a contact from the company directory — caller information displays automatically on incoming calls
Configure PJSIP endpoint settings: codecs, transport (UDP/TCP/TLS), NAT handling, media encryption (SRTP) and authentication credentials
Set up per-extension voicemail with personalized greeting, email notification and AI transcription integration
Define call forwarding rules: unconditional (always forward), on busy (forward when line is occupied), on no-answer (forward after timeout)
Register multiple devices per extension: desk IP phone, softphone, mobile app and desktop app all ring simultaneously or in sequence
BLF/presence indicators update in real-time across all platforms: see who is available, on a call, ringing or offline
Automatic provisioning generates configuration files for supported IP phones (Grandstream, Yealink) — phones auto-configure on boot
Manage extension groups for ring group functionality: sales team, support team, management with flexible ring strategies
Real-time extension status dashboard shows all extensions with their current state, registered devices and active calls
💡Use cases
- •Onboarding new employees: create an extension, associate their contact, assign an alias, provision their desk phone and mobile app in one workflow
- •Receptionists looking up the extension directory to find and transfer calls to the right person by name or department
- •Sales reps with multiple devices: desk phone in the office, mobile app on the road, web softphone at home — all ringing the same extension
- •Managers setting up conditional forwarding: calls go to desk phone first, then mobile after 15 seconds, then voicemail after 30 seconds
- •IT administrators bulk-provisioning 50 IP phones by assigning extensions and letting auto-provisioning handle the rest
- •Team leads monitoring BLF presence to see which agents are available before transferring a VIP call
- •Companies maintaining a clean internal directory by associating contacts with extensions for automatic caller ID display
- •Multi-site organizations using aliases for simplified cross-site dialing (e.g., dial 200 to reach Paris office reception)
✅Benefits
- ✓Contact association for automatic caller identification on internal and external calls
- ✓Flexible alias system: assign one or more short numbers per extension for simplified dialing
- ✓Real-time BLF/presence monitoring across web, mobile, desktop and IP phones
- ✓Per-extension voicemail with greeting, email notification and AI transcription
- ✓Advanced call forwarding: unconditional, on busy and on no-answer with configurable timeouts
- ✓Multi-device support: register desk phones, softphones, mobile and desktop apps on one extension
- ✓Automatic IP phone provisioning for Grandstream, Yealink and other supported brands
- ✓Full PJSIP configuration: codecs, transport, NAT, SRTP encryption and authentication
- ✓Extension groups for ring group and team-based call distribution
- ✓Centralized dashboard with real-time status, registered devices and active call indicators