SIP trunking
Keep your PBX. Modernise the lines behind it.
SIP trunks that scale channel-by-channel, with global DID ranges, fraud controls and per-second billing — a low-risk first step off ISDN.
Elastic capacity
- Add or remove channels on demand
- Burst capacity for seasonal peaks
- No 30-channel PRI increments
- Per-second billing, no rounding to the minute
Numbers and routing
- DID ranges in 45+ countries
- Number porting included
- Least-cost routing across redundant carriers
- Automatic failover between trunk endpoints
- Geographic and non-geographic ranges
Security and fraud control
- IP authentication or SIP registration
- TLS signalling and SRTP media
- Per-trunk spend caps and velocity alerts
- Destination allow/deny lists
- Toll-fraud monitoring 24/7
Compatibility
- Works with Asterisk, FreePBX, 3CX, Avaya, Cisco, Mitel
- Standards-compliant SIP — no proprietary SBC required
- E.164 or national dial-plan formats
- Codec support: Opus, G.711, G.729
Frequently asked questions
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