Key Features & Typical Specifications

From the datasheet and marketing description, here are features that apply to these gateways:

• Single E1/T1 port that supports up to 30 B-channels + 1 D-channel (typical of PRI) for voice/data traffic. dasscom.com+2dasscom.com+2

• SIP protocol support for VoIP side (i.e., connecting legacy digital E1 trunk to SIP/IP network). dasscom.com+1

• Designed for enterprise use: bridging traditional PBX/legacy trunks or telecom provider E1 lines into IP infrastructure. hubrisindia.co.in+1

⚠️ What to Check / Verify Before Purchase

Because you’re in India (Bengaluru) and will integrate into a real telecom/IP environment, make sure you check the following:

1. Port & Signalling Compatibility: Ensure the gateway supports the specific signalling used in your region on the E1 line (e.g., ISDN PRI, CAS, Q.SIG if applicable) and the B-channel count works for your call volume.

2. Number of Channels: While the description says “30 B-channels” for 1 E1 port, confirm how many simultaneous calls (voice/fax) are supported under your codec/usage profile.

3. Codec & Features: Check supported voice codecs (G.711, G.729, etc), fax support if needed, DTMF modes, SIP compatibility, echo cancellation, jitter handling.

4. Network Integration: Ensure the gateway works well with your IP-PBX or SIP trunk and your LAN/WAN environment (QoS, latency, NAT/firewall, VLANs).

5. Indian Telecom Specifications: Ensure E1 port supports Indian framing/line standards (G.703, 2.048 Mbps, 120Ω or 75Ω as needed), and telco interface compatibility.

6. Support and Service: Check local distributor support, firmware updates, warranty, spares — especially since high-reliability trunk gateways matter for enterprise.

7. Scalability & Future Growth: Think about whether you might need more than 1 E1 port (e.g., 2 or 4 ports) and whether Dasscom offers higher port count models, or if you’ll need a different brand then.

8. Rack / Power / Environment: For trunk gateways, ensure proper rack mounting, power supply (AC input), cooling/ventilation.

9. Cost / Total Ownership: Beyond hardware cost, include installation/configuration, licensing (if any), support/maintenance, and training if staff will manage.