Description
The AudioCodes Mediant 1000B M1KB-D2-2AC delivers dual-span T1/E1 capacity with dual-PSU power redundancy in a single pre-configured 1U chassis. Two T1/E1 voice modules provide up to 46 simultaneous channels on T1 (60 on E1), and two AC power supplies operate in active/standby mode to eliminate the power supply as a single point of failure. Four bays remain open for future expansion. This is the configuration for organizations that need meaningful SIP trunking capacity and cannot afford unplanned downtime — the combination of dual spans and redundant power covers both capacity and availability from day one.
The Telecom Spot Take
When voice traffic is a business-critical function — call centers, customer-facing operations, healthcare communications, financial services — the M1KB-D2-2AC addresses two of the most common failure scenarios simultaneously: insufficient concurrent channels and power supply failure. Two T1 spans give you 46 simultaneous calls, which handles most mid-market peak periods without contention. The dual PSU means a failed power supply generates an alert, not an outage. Four open bays let you add capacity when call volume data justifies it. This configuration is also popular with managed service providers who need a turnkey gateway that can be racked and handed off to a client with minimal on-site configuration time — pre-installed modules, dual power, ready to provision.
Key Features
- 2 T1/E1 spans pre-installed: Up to 46 simultaneous channels (T1) or 60 channels (E1) — dual-span capacity with no module installation required.
- Dual AC redundant power: Active/standby PSU configuration — if one supply fails, the other takes the full load with zero service interruption.
- 4 open expansion bays: Add T1/E1, BRI, or analog modules to expand capacity without replacing the chassis.
- 2 Gigabit Ethernet ports: Dual GE interfaces for SIP connectivity and optional network-level redundancy.
- E-SBC capable via software license: The same hardware platform can function as a session border controller when licensed.
- SIP, H.323, and MGCP support: Interoperable with any enterprise VoIP platform, SIP trunking provider, or legacy H.323 environment.
- T.38 fax relay: Full fax over IP support across all active T1/E1 channels.
- 1U rack-mountable: Standard 19-inch rack form factor.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | M1KB-D2-2AC |
| Pre-Installed Modules | 2 × T1/E1 digital voice modules (2-span) |
| Voice Channels (T1) | Up to 46 simultaneous channels |
| Voice Channels (E1) | Up to 60 simultaneous channels |
| Open Expansion Bays | 4 (of 6 total) |
| GE Network Ports | 2 × 10/100/1000Base-T Gigabit Ethernet |
| Power Supply | Dual AC, active/standby redundancy, 100–240V auto-ranging |
| 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 |
| Echo Cancellation | G.165/G.168 |
| Max Voice Channels (fully populated) | Up to 192 |
| Management | Web GUI, SNMP, EMS, CLI |
| Vendor | AudioCodes |