SIP Trunking

Enterprise-grade SIP connectivity for your PBX.

Features

Key Capabilities

Elastic Capacity

Scale on demand

Redundancy

Multi-region failover

Encryption

TLS and SRTP support

Applications

Use Cases

PBX Modernization

Connect your existing Asterisk, FreeSWITCH, or enterprise PBX to SMSLY cloud infrastructure without replacing hardware.

Call Center Trunking

Provide elastic capacity for call center operations with automatic scaling during high-volume periods.

Disaster Recovery

Use SIP trunking as a failover for your primary telephony provider with automatic rerouting during outages.

Integration

How It Works

1

Configure Your PBX

Point your PBX to SMSLY SIP endpoints. We provide configuration guides for all major PBX platforms.

2

Set Up Authentication

Configure IP whitelisting or credential-based authentication to secure your SIP trunk connection.

3

Start Making Calls

Route outbound calls through the SMSLY network and receive inbound calls to your provisioned numbers.