AudioCodes Mediant 1000B M1KB-D1 Hybrid Media Gateway – 1 T1/E1 Span, Modular VoIP Gateway

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AudiocodesSKU: M1KB-D1
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Description

The AudioCodes Mediant 1000B M1KB-D1 is a compact, modular, and highly scalable hybrid media gateway engineered to bridge legacy TDM systems with modern IP networks. Ideal for enterprise environments and small-scale carrier deployments, it provides a reliable and flexible solution for VoIP migration, PSTN connectivity, and mixed telephony environments.

Equipped with one T1/E1 span module and five additional open bays, the M1KB-D1 offers extensive expansion options to support digital spans, analog lines, BRI interfaces, and advanced media processing. Built on AudioCodes’ VoIPerfect™ architecture, it ensures superior voice quality, broad interoperability, and robust signaling support across diverse telephony protocols.

Whether integrating legacy PBX systems, connecting IP-PBX platforms to the PSTN, or building a mixed analog/digital telephony infrastructure, the Mediant 1000B M1KB-D1 delivers exceptional reliability, security, and service continuity with optional lifeline interfaces and redundant configurations.

Category Details
Product Type Hybrid Media Gateway
Model / SKU AudioCodes Mediant 1000B M1KB-D1
Installed Module 1× T1/E1 span module
Expansion Bays 5 available bays for digital, analog, or BRI voice modules
Supported Digital Modules Up to 4× 1-span, 2× 2-span, or 1× 4-span T1/E1 modules
Supported Analog Modules Up to 6× 4-port FXS/FXO modules (24 ports max)
Supported BRI Modules Up to 5 modules (40 BRI sessions, SIP only)
Mixed Interface Support Mixed digital, analog, and BRI configurations
Network Interfaces 1 active/standby pair of 10/100/1000 Ethernet ports
Telephony Protocols SIP, H.248, MGCP (analog modules), QSIG, CAS, ISDN PRI
Voice Codecs G.711, G.726, G.727, G.723.1, G.729, GSM FR/EFR, iLBC, EVRC, AMR, G.722, more
Fax/Modem Support T.38 real-time fax, PCM/ADPCM fallback
Echo Cancellation G.165 & G.168 (32/64/128 ms tail lengths)
Quality Enhancements Jitter buffer, VAD, CNG, VLAN tagging (802.1p/Q), DiffServ, RTCP-XR
DTMF Support RFC 2833, in-band, out-of-band
Security IPSec, TLS/SIPS, HTTPS, SRTP, RADIUS login control
Signaling – Digital T1/E1 CAS, MF-R1, R2 MFC, ISDN PRI (ETSI/NI2/DMS100/5ESS), SIGTRAN
Signaling – Analog FXS/FXO, Caller ID, polarity reversal, metering, VMWI, distinctive ringing
Transport Protocols RTP/RTCP (RFC 3550/3551)
Power Supply 100–240V AC, 50/60 Hz, single PSU (redundant optional)
Form Factor 1U rack-mount, 19-inch width
Use Cases PSTN trunking, IP-PBX integration, legacy PBX migration, mixed telephony environments, hosted UC, contact centers

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Return Policy (Short Summary)

We offer a 30-day return window for most unopened, factory-sealed items.

Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.


Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.


For damaged or incorrect items, please contact us immediately.


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