Description
If you run a small office or branch location and want to keep using your reliable analog phones, fax machines, and modems while moving to a modern SIP VoIP or Microsoft Teams phone system, the AudioCodes MediaPack MP504/4S/SIP is exactly what you need. This compact 4-port FXS analog VoIP gateway makes the transition simple, secure, and cost-effective. You get crystal-clear voice calls, reliable fax transmission, and easy management without ripping out your existing equipment. Whether you’re connecting a few desk phones or bridging a legacy PBX, the MP504 delivers enterprise-grade performance in a desktop-friendly package that’s ready to go right out of the box.
Please note: Direct Routing Teams Integrations, high level features, and access to Audiocodes support may require an additional license or support contract.
Key Features
- 4 FXS loop-start ports let you connect up to four analog telephones, fax machines, or modems directly
- Superior voice quality with advanced echo cancellation (G.168 up to 128 ms) and support for G.711, G.723.1, G.729A, and G.722 codecs
- T.38 real-time fax compliant plus automatic bypass to PCM for maximum reliability
- Comprehensive SIP interoperability with leading platforms including Microsoft Teams SIP Gateway
- Built-in 3-way conference calling, Message Waiting Indication (MWI), Caller ID, polarity reversal, metering tones, and distinctive ringing
- Dual Gigabit Ethernet ports (1 WAN + 1 LAN) for flexible networking and high resiliency
- Zero-touch provisioning and standalone survivability keep your branch running smoothly during outages
- Optional data routing, security features, and long-haul support (up to 4.4 km) for maximum flexibility
- Secure voice with SRTP on all channels and easy management via web interface, SNMP, or TR-069
Technical Specifications
- Telephony Interfaces: 4 FXS loop-start ports
- Network Interfaces: 1 × 10/100/1000 Mbps WAN copper Ethernet, 1 × 10/100/1000 Mbps LAN copper Ethernet
- Voice & Fax: G.711, G.723.1, G.729A, G.722; echo cancellation (G.165/G.168); T.38 compliant fax; DTMF in-band/out-of-band (RFC 2833, SIP INFO)
- Signaling: SIP over UDP, TCP, TLS; IPv6 support
- Power: AC 100–240 V, 50–60 Hz (12 V / 3 A adapter included); optional dual power supply
- Dimensions (H × W × D): 51 × 296 × 160 mm
- Weight: 670 g (1.5 lb)
- Mounting: Tabletop, wall-mount, or rack-mount with optional shelf
- Environmental: Operating 5–40 °C (41–104 °F), storage –25–85 °C, 10–90 % non-condensing humidity
- Certifications & Compliance: Microsoft Teams SIP Gateway certified; full interoperability with major UC vendors
See Audiocodes MP-5xx datasheet for more information.