SIP Trunking — Replace Your PRI Lines
Already have a PBX? Connect it to the public phone network through DVGVoIP SIP trunks and cut your line costs dramatically.
What Is SIP Trunking?
A SIP trunk is a virtual phone line that connects your existing PBX to the outside world over your internet connection — replacing traditional analog or PRI lines entirely.
Instead of paying per physical line, you pay per concurrent call channel. A business that rarely has more than 5 calls at once pays for 5 channels, not 20 idle copper pairs.
DVGVoIP SIP trunks work with 3CX, Cisco, Avaya, Asterisk, and most SIP-compatible PBX systems. If your PBX can accept SIP, we can connect it.
SIP Trunk Features
- Unlimited concurrent channels available
- Local Thunder Bay and Northern Ontario DIDs
- Toll-free number support
- Unlimited Canada & US calling included
- E911 CRTC-compliant service
- Number porting — keep your existing numbers
- Failover to backup destination on outage
- Call detail records and usage reporting
- Compatible with any SIP PBX
SIP vs. Traditional PRI — The Numbers
The math almost always favours SIP trunking for Northern Ontario businesses.
Traditional PRI
- 23 fixed channels per T1 — pay for all of them
- $400–$900/month per PRI circuit
- Long-distance charges on top
- Weeks lead time to add capacity
- Physical hardware at each site
- Single point of failure
DVGVoIP SIP Trunking
- Pay only for channels you actually use
- Typically $15–$25/channel/month
- Canada & US long distance included
- Add channels in minutes
- No on-site hardware required
- Automatic failover built in
Connecting to Your Existing PBX
If you have an existing PBX investment you want to keep, SIP trunking is the right path. DVGVoIP's team will configure the SIP credentials, dial plans, and failover routing to work seamlessly with your current system.
Common PBX systems we connect:
- 3CX (on-premise or cloud)
- Cisco CallManager / CUCM
- Avaya IP Office
- Asterisk / FreePBX
- Mitel / ShoreTel
- Any SIP-compliant PBX
Not sure if your PBX is compatible? Call us — we'll tell you in minutes.
Getting Set Up
- Assessment — We review your current PRI setup and call volumes.
- Channel sizing — We right-size your trunk based on real usage data.
- Configuration — We provide SIP credentials and assist with PBX setup.
- Number porting — Your existing numbers move to our platform.
- Cutover — Switch happens in minutes, not days.