Description
High-density T1/E1 capacity and carrier-grade power redundancy in a single pre-configured 1U unit. The AudioCodes Mediant 1000B M1KB-D3-2AC ships with a quad T1/E1 module pre-installed — delivering up to 92 simultaneous voice channels on T1 or 120 on E1 — alongside two factory-installed AC power supplies operating in active/standby mode. Two expansion bays remain open. This configuration addresses two critical requirements at once: high concurrent call capacity and zero-tolerance for power supply downtime.
The Telecom Spot Take
The M1KB-D3-2AC is the choice when you're deploying significant T1/E1 SIP trunking capacity and need it to stay up through a power supply failure. At 92 T1 channels and dual PSU redundancy, this is a configuration that belongs in any environment where voice is a revenue-generating or compliance-critical service. The quad T1/E1 module occupies one bay efficiently, leaving two bays for analog modules or additional digital spans. Organizations deploying for contact centers, financial services telephony, or multi-site SIP trunk aggregation will find this the most operationally complete pre-configured Mediant 1000B available — no post-delivery module swaps required, just rack, configure, and go.
Key Features
- 4-span quad T1/E1 module pre-installed: Up to 92 channels (T1) or 120 channels (E1), in a single module bay — the highest-density pre-configured option in the D-series.
- Dual AC redundant power: Active/standby PSU configuration prevents power supply failure from becoming a service outage.
- 2 remaining expansion bays: Expand with analog, BRI, or additional digital voice modules without replacing the chassis.
- 2 Gigabit Ethernet ports: Dual GE interfaces for SIP connectivity and optional network redundancy.
- E-SBC via software license: Same hardware can function as an enterprise session border controller when licensed.
- SIP, H.323, MGCP: Full multi-protocol support for any VoIP platform or SIP trunking provider.
- 1U rack-mountable: Standard 19-inch rack form factor.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | M1KB-D3-2AC |
| Pre-Installed Module | 1 × Quad T1/E1 voice module (4-span) |
| Voice Channels (T1) | Up to 92 simultaneous channels |
| Voice Channels (E1) | Up to 120 simultaneous channels |
| Open Expansion Bays | 2 (of 6 total) |
| Power Supply | Dual AC, active/standby redundancy, 100–240V |
| GE Network Ports | 2 × 10/100/1000Base-T |
| Form Factor | 1U rack-mountable |
| Signaling Protocols | SIP (RFC 3261), H.323, MGCP |
| Voice Codecs | G.711, G.723.1, G.726, G.727, G.729A/AB, iLBC, GSM |
| Fax | T.38 fax relay |
| Max Voice Channels (fully populated) | Up to 192 |
| Management | Web GUI, SNMP, EMS, CLI |
| Vendor | AudioCodes |