Specifications:

Since I wasn’t able to find a publicly detailed spec sheet only for the DS-4FXO model, you’ll want to verify exact details with the vendor. The specs below are derived from the DS Series datasheet for similar models:

• Analogue Ports: 4 × FXO ports (for connecting telco PSTN/ISDN lines)

• VoIP/SIP Support: Standard SIP gateway features (registration, trunking, call routing)

• Codecs & Fax: Voice codecs such as G.711, G.729 etc. Fax support may be present for analogue lines.

• Network Interface: Likely 10/100 Mbps Ethernet for WAN, LAN configuration.

• Power & Environment: Operating temperature and environment per series (e.g., -10 °C to 60 °C) dasscom.com

• Management: Web-based configuration, monitoring of ports, CDR logs.

⚠️ Key Things to Verify & Consider

Before purchasing or deploying the DS-4FXO in your environment (Bengaluru/India), check the following:

1. Trunk Compatibility: Since it’s FXO you will connect telco lines (PSTN/analogue CO). Ensure your lines (voltage, signalling type) are compatible with the gateway’s FXO ports (ring voltage, impedance, line interface).

2. Simultaneous Calls Capacity: Although only 4 ports, check how many concurrent calls/faxes the unit supports, especially under load.

3. Fax Support & Reliability: If any of the 4 ports are fax lines, verify analogue fax pass‐through works reliably (or T.38 if VoIP side).

4. Integration with SIP/IP-PBX: Ensure your IP-PBX or SIP trunk can integrate with the gateway — dial plan, DTMF signalling modes, QoS for voice, NAT/firewall traversal.

5. Analogue Line Features: Check for features like caller ID, call waiting, call transfer, hold, etc on FXO side if required.

6. Support & Firmware: Confirm Dasscom (or authorised distributor) provides firmware updates, local service, spare parts (for FXO module) in India.

7. Scalability: If you might expand beyond 4 trunk lines in the future, check if this model supports stacking or upgrade to 8/16/32 port versions.

8. Installation Considerations: Ensure you have proper power supply, rack/desktop mount area, cooling/ventilation, and network connection ready for your gateway.

9. Regulatory/Operator Compliance: Using trunk lines in India may entail regulatory compliance (licensing, usage rules). Confirm with your telecom provider.