SDN appliance
A small appliance for difficult SIP networks.
The VoiceTel SDN appliance sits inside the customer LAN and establishes a secure tunnel to VoiceTel, helping PBX registrations and media flows avoid common NAT, ALG, UDP timer, and firewall problems.
What it solves
No audio, flapping registrations, firewall friction, and blind spots.
The appliance gives VoiceTel a controlled path for signaling and media, keeps local PBX registration behavior stable, reduces the need for broad inbound SIP and RTP exposure at the customer edge, and gives support a clear demarcation point.
Problems it removes
-
No audio or one-way audio
Media-path issues often come from NAT, firewall, or RTP pinhole behavior. The appliance gives VoiceTel a controlled path.
-
Registration instability
Keep local PBX registration behavior stable while the appliance handles the upstream secure path.
-
Firewall policy friction
Reduce the need to open broad inbound SIP and RTP exposure at the customer edge.
-
Support visibility
Give support a clearer demarcation point for diagnosing LAN, tunnel, SIP, and media behavior.
Integrations
PBX-agnostic, with any standards-compliant SIP endpoint.
Configuration guides cover FreePBX, FusionPBX, and 3CX, with SBC interop notes for Asterisk, FreeSWITCH, Cisco CUBE, and AudioCodes.
For integrators and resellers
Ship the appliance; the SIP problems stay behind the tunnel.
Ship the appliance to the customer's office. Their SIP problems disappear behind a controlled tunnel to VoiceTel, with no firewall reconfiguration, no broad inbound exposure, and no multi-day diagnosis cycles. You bill the customer; we bill you per appliance per month.
| Service | Rate |
|---|---|
| SDN appliance/ appliance / month | 10.00* |
* Volume discounts bring the rate down toward $5 at scale. Billed alongside your VoiceTel account; ships pre-configured for your tenant.
Ready to deploy?
A very small price to pay for total business continuity.
