Description
The AudioCodes MediaPack 114 in its 2S/2O configuration delivers something no single-type port gateway can: simultaneous analog phone connectivity and PSTN trunk line access in a single compact unit. Two FXS ports connect your analog phones and fax machines to the IP network, while two FXO ports tie in PSTN trunk lines — giving you SIP integration, PSTN backup, and T.38 fax in one small box. It's the flexible choice for SMBs making a phased migration to VoIP without cutting ties to the PSTN overnight.
The Telecom Spot Take
The mixed FXS/FXO configuration is the MediaPack 114 variant that gets specified when an organization needs both directions of analog connectivity during a VoIP migration. The FXS side keeps existing phones and fax machines working on SIP. The FXO side connects to incoming PSTN lines — critical for E911 compliance, PSTN failover, or organizations that still receive calls on analog DID lines. IT teams planning a gradual migration from a legacy PBX to hosted or on-premises SIP appreciate the MP114/2S/2O because it doesn't force a hard cutover. You can run SIP and PSTN simultaneously, route calls intelligently, and phase out analog infrastructure at your own pace. Add zero-touch provisioning, SNMP management, and AudioCodes' broad platform interoperability, and this is a gateway that earns its keep in almost any SMB topology.
Key Features
- 2 FXS + 2 FXO ports: Connect 2 analog phones/fax machines AND 2 PSTN trunk lines simultaneously — maximum flexibility for mixed analog environments.
- PSTN fallback (E911 support): FXO ports provide automatic fallback to PSTN during network or power failures, and support E911 emergency call routing for life-safety compliance.
- T.38 fax relay: Group 3 fax relay up to 14.4 kbps with auto-switching between fax and voice modes on any port.
- SIP, H.323, and MGCP: Works with all major SIP servers, hosted VoIP platforms, and legacy H.323 gatekeepers.
- G.168-2004 echo cancellation: Up to 128 ms tail-length echo cancellation on every port for crystal-clear voice quality.
- Zero-touch provisioning: Remote configuration via TFTP/HTTP — deploy to branch offices without on-site technical staff.
- Stand Alone Survivability (SAS): Maintains local call routing during WAN outages — critical for branch sites where the WAN is a single point of failure.
- AudioCodes CA Certificate (/CER): Factory-signed security certificate for authenticated SIP server connections.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | MP114/2S/2O/SIP/CER |
| FXS Ports | 2 × FXS (loop-start) — analog phone/fax side |
| FXO Ports | 2 × FXO — PSTN trunk line side |
| Network Interface | 1 × 10/100Base-T Ethernet |
| Signaling Protocols | SIP (RFC 3261), H.323 v4, MGCP (RFC 3435) |
| Voice Codecs | G.711 (A-law, μ-law), G.723.1, G.726, G.729A/AB |
| Fax | T.38 (Group 3, up to 14.4 kbps), T.30 passthrough |
| DTMF | RFC 2833, SIP INFO, In-band |
| Echo Cancellation | G.168-2004, up to 128 ms tail length |
| Voice Quality | VAD, CNG, Dynamic Jitter Buffer |
| PSTN Fallback | Automatic via FXO ports; E911 emergency call routing |
| QoS | IEEE 802.1p/Q VLAN, DiffServ/TOS, RTCP-XR |
| Management | Web GUI, TFTP, HTTP/HTTPS, SNMP, Auto-provisioning |
| Dimensions (W × D × H) | 22 cm × 17.2 cm × 4.2 cm (8.7" × 6.8" × 1.7") |
| Weight | Approx. 0.5 kg (1.1 lbs) |
| Power | External AC adapter (included) |
| Certifications | FCC, CE, AudioCodes CA Certificate (/CER) |
| Vendor | AudioCodes |
Frequently Asked Questions
- What's the difference between FXS and FXO ports?
- FXS (Foreign Exchange Station) ports connect to analog end devices — phones, fax machines, or analog PBX trunks. FXO (Foreign Exchange Office) ports connect to PSTN lines coming from your telephone company. The MP114/2S/2O gives you both, so you can connect analog devices and retain PSTN access in the same gateway.
- Does this model support E911 emergency calling?
- Yes. The FXO ports support automatic fallback to PSTN for emergency calls, including E911 routing. This is a critical compliance feature for any VoIP deployment in the United States.
- Can I use this with a hosted VoIP or UCaaS platform?
- Yes. The MP114 series is compatible with all major SIP-based hosted platforms. AudioCodes publishes interoperability guides for BroadSoft BroadWorks, Asterisk, Cisco UCM, and others. Contact us to discuss your specific platform.