General
Number of FXO ports	2
Ethernet ports	2x10/100baseT
Supported protocols	H.323, SIP
CODEC package	G.711, G.726, G.727, G.723.1, G.729
Operating voltage	100-240 VAC
IP QoS routing

The Patton SmartNode 4522 is a Dual-FXO VoIP gateway router designed for integrating analog telephone lines into IP-based communication networks. The device connects two analog PSTN lines (FXO) to an IP network via two Ethernet ports (10/100baseT) and supports the H.323 and SIP protocols. It is designed for use in small and medium-sized enterprises as well as in telecommunications applications where a cost-effective migration from analog to IP-based telephone systems is required. The external user interface enables easy configuration and monitoring of the device.

Applications
This router is particularly suitable for connecting analog telephone lines to VoIP systems, for example in offices, call centers, or when integrating existing telephone systems into IP telephony infrastructures. It can function as a gateway between traditional PSTN lines and IP networks, allowing existing telephone connections to be continued in use without requiring a complete replacement. Support for H.323 and SIP ensures compatibility with a wide range of IP telephony platforms and providers.

Functions and Features in Detail
The device features two FXO ports, each capable of connecting to an analog telephone line (e.g., a fixed-line connection). These ports are equipped with an integrated VoIP CODEC package enabling encoding and decoding of voice signals. Supported CODECs include G.711, G.726, G.727, G.723.1, and G.729, allowing flexible adaptation to different bandwidth and quality requirements. The integrated IP QoS routing function ensures prioritized transmission of voice data, guaranteeing high voice quality and low latency.

Technology Explained Simply
The two Ethernet ports (10/100baseT) enable network connectivity via standard network cables (Cat5 or higher), allowing the device to be integrated into existing LAN infrastructures. Support for H.323 and SIP protocols ensures compatibility with various IP telephony systems. The external user interface (External UI) provides a physical interface for configuration and diagnostics, simplifying maintenance and troubleshooting. Power supply is provided by an internal power supply unit rated for 100 to 240 VAC, enabling worldwide use.

Compatibility and Accessories
The device is designed for use with analog telephone lines (FXO) and can be connected to IP telephony systems supporting H.323 or SIP. The integrated CODECs (G.711, G.726, G.727, G.723.1, G.729) allow flexible adaptation to different network requirements.

Installation and Mounting
Installation involves connecting the analog telephone lines to the FXO ports and linking the device to the IP network via the Ethernet ports. Power supply is provided by the internal power supply unit, which is connected directly to a power outlet. Configuration can be performed via the external user interface, with no additional tools or software required. Physical mounting is typically on a desk or in a network enclosure, with no special mounting accessories needed.

Operational Advantages
Using the Patton SmartNode 4522 enables a gradual migration from analog to IP-based telephone systems, preserving existing investments in analog lines. Support for multiple CODECs and protocols ensures high flexibility when integrating into existing systems. The IP QoS function ensures stable and high-quality voice transmission, which is particularly beneficial in critical communication environments. The external user interface simplifies maintenance and diagnostics, minimizing downtime.