Description
The AudioCodes M1KB-VM-2SPAN is a dual-span T1/E1 voice module for the Mediant 1000B modular VoIP gateway. It provides two independent T1 or E1 digital telephony interfaces in a single module slot — delivering up to 48 simultaneous channels on T1 or 60 on E1. This makes it the practical choice for mid-size contact centers, enterprise campuses, or branch offices with two active PRI circuits or T1/E1 trunks to bridge to SIP.
The Telecom Spot Take
Two T1 spans in one module is a common configuration for organizations that need the capacity of two PRI circuits without consuming two separate voice module slots in the Mediant 1000B. The M1KB-VM-2SPAN delivers this efficiently, leaving additional module bays available for further expansion, media processing, or other Mediant 1000B options. For healthcare facilities with dedicated nurse-call T1 circuits, mid-size contact centers running two active PRI trunks, or enterprises with primary and secondary PSTN connections, this module covers the most common dual-trunk scenario in a single purchase. Step up to M1KB-VM-4SPAN when four spans are needed.
Key Features
- Dual T1/E1 spans — 48 DS0 channels (T1) or 60 DS0 channels (E1) per module
- Two interfaces, one module slot — efficient use of Mediant 1000B expansion bays
- TDM-to-SIP bridging — connects legacy PBX trunks or PSTN circuits to SIP-based VoIP infrastructure
- Primary and secondary trunk support — supports dual-circuit configurations for redundancy or capacity
- OEM Mediant 1000B module — factory-validated for the Mediant 1000B voice module bay
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | M1KB-VM-2SPAN |
| Compatible Platform | AudioCodes Mediant 1000B |
| Digital Spans | 2 (T1 or E1) |
| T1 Channels | Up to 48 DS0 |
| E1 Channels | Up to 60 DS0 |
| Interface | T1/E1 (RJ48C or BNC) |
| Protocol Support | SIP, ISDN PRI, SS7 (per platform license) |
| Vendor | AudioCodes |