SM-X-16FXS/2FXO= Cisco expansion module at discount

SM‑X‑16FXS/2FXO Specifications

Cisco High‑Density Analog Voice Service Module

Manufacturer: Cisco
Manufacturer Model: SM‑X‑16FXS/2FXO
Product Line: Cisco High‑Density Analog Voice Modules
Product Series: Single‑Wide FXS/FXO Service Module
Product Type: Router Voice/Telephony Module
Product Name: Cisco SM‑X‑16FXS/2FXO Analog Voice Service Module

KEY FEATURES:
FXS Port Count: 16 (Foreign Exchange Subscriber ports)
FXO Port Count: 2 (Foreign Exchange Office ports)
FXO Failover Bypass Ports: 2
Supports Analog Telephony Connectivity for Telephones, Fax Machines, Modems
Supports Various Signaling Formats: In‑Band DTMF, Out‑of‑Band Pulse (8–12 pps)
FXS Signaling Supported: Loop‑Start, Ground‑Start, DID
Compatible Platforms: Cisco ISR 4000 Series Routers (e.g., 4331, 4351, 4451)

PERFORMANCE:
FXS Loop Resistance: Up to ~600 Ω (short loop), up to ~1400 Ω (long loop)
DID Loop Resistance: Up to ~1800 Ω
On‑Hook Voltage: –44 V
Off‑Hook Loop Current: ~25 mA (short), ~35 mA (long)
Ring Signal Frequencies Supported: 20, 25, 30, 50 Hz

ENVIRONMENTAL & RELIABILITY:
Operating Temperature Range: 0 °C to 40 °C
Storage Temperature Range: –40 °C to 70 °C
Supported Cable Types: Category 3, Category 5

PHYSICAL:
Form Factor: Single‑Wide Service Module
Power Consumption: ~70.32 W
Backplane Voltage: 12 V, Current Draw ~5.86 A
Typical Dimensions (H × W × D): ~1.58 in × 7.44 in × 7.6 in (~4.02 cm × 18.9 cm × 19.3 cm)
Weight: ~1.98 lb (~0.9 kg)