SM-X-16G4M2X= Cisco EtherSwitch Module Switch at discount

SM‑X‑16G4M2X Specifications

Cisco High‑Density Analog Voice Service Module – 16G/4M/2X

Manufacturer: Cisco
Manufacturer Model: SM‑X‑16G4M2X
Product Line: Cisco Unified Communications / Voice Interface Modules
Product Series: SM‑X (Service Module – Extended)
Product Type: Analog Voice Service Module
Product Name: Cisco SM‑X 16G/4M/2X Analog Voice Module

KEY FEATURES:
G (FXS) Ports: 16
M (FXO/FXS Mix) Ports: 4 (configured per SKU/platform requirements)
X (FXO) Ports: 2
Voice Signaling: Analog POTS
Form Factor: Single‑wide SM‑X service module
Hot‑Swap Support: Yes (platform dependent)
Use Case: High‑density analog voice termination for PSTN and legacy devices

VOICE & TELEPHONY CAPABILITIES:
Supports analog phones, fax machines, and modems
Connects to PSTN lines or PBX trunks
Supports caller ID, call progress tones, and signaling
Designed for enterprise voice deployments

COMPATIBILITY:
Supported Platforms: Cisco ISR 4000 Series Routers
Operating System: Cisco IOS / IOS XE (voice enabled)

INTERFACES & CONNECTIVITY:
Connector Type: Multi‑pair analog voice connector (e.g., RJ‑21)
Cabling: Breakout cables required for individual lines

PERFORMANCE & RELIABILITY:
Designed for continuous enterprise operation (24×7)
High‑density analog port consolidation

PHYSICAL:
Form Factor: SM‑X single‑wide module
Installation: Internal router service module
Cooling: Platform airflow
Weight: Approximate, module‑only (platform dependent)