Description
The AudioCodes MediaPack MP516/16S/SIP is a powerful 16-port analog VoIP gateway built for businesses that still rely on traditional phones, fax machines, or older PBX systems but want the cost savings and flexibility of modern SIP trunks or Microsoft Teams. With 16 FXS ports via RJ11 jacks, dual Gigabit Ethernet ports for maximum uptime, and rock-solid SIP interoperability, this gateway makes migration painless while keeping every analog device working exactly as it always has.
At The Telecom Spot we work with VoIP gateways every day, and the MP516/16S/SIP stands out for medium-sized offices and branch locations that need more than 8 ports but don’t want the complexity of a full PBX replacement. What we love most is the built-in branch survivability and zero-touch provisioning – your team can deploy dozens of these units across multiple sites and have them auto-configure from a central server. It also plays perfectly with Microsoft Teams Phone via the official SIP Gateway, so you can keep analog conference-room phones or fax lines live without extra adapters. If you’re tired of dropped faxes or choppy calls on cheap gateways, the MP516 delivers broadcast-quality voice and reliable T.38 fax every single time.
Please note: SBC sessions, Direct Routing Teams Integrations, high level features, and access to Audiocodes support may require an additional license or support contract.
Key Features
- 16 FXS analog ports via RJ11 connectors – plug in up to 16 phones, fax machines, or PBX trunks instantly
- Microsoft Teams Phone ready – certified SIP Gateway compatibility for seamless analog-to-Teams integration
- Enterprise voice quality – G.711, G.729A, G.723.1 and G.722 coders plus advanced echo cancellation
- Reliable fax support – full T.38 version 3 compliance plus automatic bypass to PCM
- Dual Gigabit Ethernet – 2× WAN + 1× LAN ports for true network redundancy
- Branch survivability – stays operational even if the main WAN link fails
- Zero-touch provisioning – auto-configures out of the box for fast, large-scale rollouts
- Rich analog features – 3-way conferencing, caller ID, message waiting indication (MWI), polarity reversal, metering tones, distinctive ringing and long-haul support (up to 4.4 km)
- SRTP security on every channel with no performance hit
- Optional data routing – add Layer 3 routing, firewall, and VPN capabilities in the same compact 1U chassis
- Dual power supply – AC (100-240V) or DC (+18 to +54V) for maximum uptime
Technical Specifications
Telephony Interfaces
- 16 FXS loop-start ports (RJ11)
- Ring voltage: Normal (57 Vrms) or High-Voltage (75 Vrms) ringing
- Ring frequency: 20 Hz (US default) or 25 Hz (EU default), user-configurable up to 100 Hz
- Maximum ringer load: REN 3 × 32 channels (normal) / REN 3 × 8 + REN 2 × 24 (high-voltage)
- Loop impedance: up to 1,500 Ohm (including phone)
- Line current: 25 mA standard / 32 mA enhanced (limited ports)
Network Interfaces
- 2 × 10/100/1000Base-TX WAN copper Ethernet
- 1 × 10/100/1000Base-TX LAN copper Ethernet
VoIP & SIP
- Protocols: SIP over UDP, TCP, TLS; IPv6 support
- Voice coders: G.711, G.723.1, G.729A, G.722
- Echo cancellation: G.165/G.168 up to 128 ms tail length
- Fax: T.38 real-time compliant, automatic bypass
- DTMF: In-band, RFC 2833, SIP INFO/NOTIFY
- Security: SRTP, SIP header manipulation, topology hiding
Management
- AudioCodes One Voice Operation Center
- Web GUI, SNMP v2/v3, SSH, Telnet, TR-069, TR-104
- Zero-touch provisioning
Physical & Environmental
- Form factor: 1U rack-mount / table-top (19” × 1U × 11.34” / 443 × 44.45 × 288 mm)
- Weight: 5.7 lb (2.6 kg)
- Power: Dual supply – AC 100-240V 50-60 Hz or DC +18 to +54V
- Operating temperature: 41°F to 104°F (5°C to 40°C)
- Certifications: CE, FCC, UL/EN 62368-1
See Audiocodes MP-5xx datasheet for more information.