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Black rectangular DECT multicell base station with smooth matte finish

AT&T

AT&T Snom M500 Pro DECT Multicell Base Station Black telephone accessory

SKU CH-G857-76F0A

Multicell DECT base station supporting shared calls across M55 and M58 handsets with up to 19 hours battery life

  • Reliable secure DECT wireless outperforms WiFi
  • Up to 19 hours talk time per charge
  • TLS SRTP encryption protects sensitive environments
  • Shared calls across handsets on one SIP account
  • Programmable keys handle hold pickup and barge-in

Snom M500 Pro DECT Multicell Base Station

The Snom M500 Pro is a DECT multicell base station designed for professional environments that require secure, reliable wireless voice coverage. It uses DECT technology to deliver greater reliability and security than WiFi, making it suitable for settings such as hospitals and banks. The base station supports shared calls across multiple cordless handsets using a single SIP account. Programmable Feature Keys can be configured as KeyLine type for call handling, pickup, and barging functions.

Teams needing secure DECT coverage

This base station suits organisations that need encrypted voice communication with TLS and SRTP across a multicell deployment. It pairs with Snom M55 handsets and M58 desk phones to extend coverage across larger sites. Buyers who require WiFi-based handsets or cellular gateway integration should look at alternative platforms. Environments without SIP infrastructure or those needing video calling capabilities will not be served by this DECT-only solution.

SIP-based setup with handset pairing

Installation involves connecting the base station to the network and provisioning it through a SIP server, after which compatible handsets are paired via DECT registration. Shared Call Emulation and KeyLine key configuration are managed in the provisioning files. Common issues include mismatched SIP credentials preventing registration, firewall ports blocking TLS or SRTP traffic, and incorrect multicell sync settings causing handover failures between base stations.

Highlights

  • Reliable secure DECT wireless outperforms WiFi
  • Up to 19 hours talk time per charge
  • TLS SRTP encryption protects sensitive environments
  • Shared calls across handsets on one SIP account
  • Programmable keys handle hold pickup and barge-in

Specifications

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Questions about this item

Does the M500 Pro base station need a separate SIP account to share calls across handsets?

No, the M500 Pro uses Shared Call Emulation so multiple cordless desksets or handsets share a single SIP account.

Can I keep my older Snom handsets and pair them with this M500 Pro base?

The M500 Pro pairs with the Snom M55 Handset and Snom M58 Desk Phone; compatibility with other Snom models is not confirmed.

How do I know the M500 Pro is operating securely after setup?

The base station provides TLS and SRTP encryption for call signalling and media, which is active once the device is configured.

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