
Mitel A1736-0000-10-55 M670i expansion module for 536M IP phone.
The Mitel A1736-0000-10-55 is the Aastra M670i expansion module, designed for use with the Aastra 536M IP telephone. This sidecar module provides additional programmable keys, extending the functionality of the base handset for users who require quick access to a larger number of lines, speed dials, or feature buttons.
The M670i expansion module integrates directly with the 536M SIP handset, making it suitable for reception desks, executive assistants, and busy professionals who manage multiple lines or frequently transfer calls. Multiple expansion modules can typically be daisy-chained to further increase key capacity.
The Aastra 536M and its accessories were part of the Aastra portfolio prior to the Mitel acquisition. While this product line has been superseded by newer Mitel handsets, the M670i remains in use across many existing deployments where the 536M continues to serve as the primary desk phone.
Available from Tech Star as new or refurbished stock. Submit a price enquiry for availability and lead time.

| Platform | 6700i Series |
|---|---|
| Manufacturer | Mitel |

| Platform | 6800i Series |
|---|---|
| Manufacturer | Mitel |

| Platform | IP-DECT |
|---|---|
| Manufacturer | Mitel |

| Platform | 6800i Series |
|---|---|
| Manufacturer | Mitel |

| Platform | IP-DECT |
|---|---|
| Manufacturer | Mitel |

| Platform | 6700i Series |
|---|---|
| Manufacturer | Mitel |
| Key Features | Programmable keys; LCD display; Daisy-chainable |
|---|---|
| Applications | Receptions; Call centres; Power users |
| Compatibility | Aastra 6757i and compatible IP phones |
| Specifications | LCD display; Multiple programmable keys |
| Platform | Aastra 500i Series |
| Manufacturer | Mitel |
Prices change daily based on stock and supply.
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