Description
The AudioCodes M1KB-VM-1SPAN is a single-span T1/E1 voice module for the Mediant 1000B modular VoIP gateway. It adds one digital telephony interface — providing up to 24 channels on T1 or 30 channels on E1 — enabling the Mediant 1000B to bridge TDM PSTN or PBX trunk circuits to SIP-based VoIP networks. It is the entry-level digital span option for organizations with moderate TDM-to-SIP migration needs.
The Telecom Spot Take
The M1KB-VM-1SPAN is the right starting point for enterprises connecting a single PRI circuit or T1/E1 PSTN trunk through the Mediant 1000B. One span gives you 24 simultaneous calls on T1 or 30 on E1 — enough for a small contact center, a branch office PSTN gateway, or a phased SIP migration where you start with one trunk and expand later. The Mediant 1000B's modular architecture means you can add more span modules as your TDM footprint grows, so starting with one span isn't a dead end. For dual-span or quad-span requirements, see the M1KB-VM-2SPAN and M1KB-VM-4SPAN.
Key Features
- Single T1 or E1 span — 24 DS0 channels (T1) or 30 DS0 channels (E1) per module
- TDM-to-SIP gateway functionality — bridges PRI/BRI or channelized TDM circuits to SIP VoIP networks
- Modular expansion — add multiple span modules as TDM trunking requirements grow
- PSTN and PBX connectivity — connects to telco-provided T1/E1 circuits or legacy PBX trunk groups
- OEM Mediant 1000B module — engineered for direct installation in the Mediant 1000B voice module bay
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | M1KB-VM-1SPAN |
| Compatible Platform | AudioCodes Mediant 1000B |
| Digital Spans | 1 (T1 or E1) |
| T1 Channels | Up to 24 DS0 |
| E1 Channels | Up to 30 DS0 |
| Interface | T1/E1 (RJ48C or BNC) |
| Protocol Support | SIP, ISDN PRI, SS7 (per platform license) |
| Vendor | AudioCodes |