Armored Inmate Phone VOIP [JP-3700-VOIP]

Designed for high-security and demanding environments:

• Prisons and correctional facilities
• Riot-prone or high-risk areas
• Emergency/SOS communication points
• Traffic control centers
• Office buildings
• Universities and campuses
• Hospitals and medical facilities
• Any location requiring a durable, armored telephone

Optional G-Tel models like CT-3500 and ST-3500 are also available in VOIP

Key Features

• Dual-line support
• Powered via external power supply or PoE (Power over Ethernet)
• Rugged, vandal-resistant construction
• Designed for continuous, reliable operation in harsh environments

Device Functions

• Call history (missed, incoming, outgoing – up to 900 records)
• User-configurable DSS (Direct Station Selection) buttons
• Network time synchronization

Audio Performance

• Narrowband codecs: G.711a/u, G.723.1, G.726 (32K), G.729AB
• Wideband codec: G.722
• Full-duplex echo cancellation (AEC)
• Voice Activity Detection (VAD)
• Comfort Noise Generation (CNG)
• Packet Loss Compensation (PLC)
• Adaptive jitter buffer (up to 300ms)
• DTMF support: In-band, RFC2833, SIP INFO

Network Features

• 10/100 Mbps Ethernet (Bridge Mode)
• IP configuration: Static IP / DHCP / PPPoE
• 802.1x network authentication
• VPN support: L2TP (basic, unencrypted), OpenVPN
• VLAN (Virtual Local Area Network) support
• QoS (Quality of Service)

Protocols & Compatibility

• SIP 2.0 (UDP / TCP / TLS)
• RTP / RTCP / SRTP
• Supported services:
  • STUN
  • DHCP
  • PPPoE
  • SNTP
  • FTP / TFTP
  • HTTP / HTTPS
  • TR-069

Configuration & Management

• Auto-provisioning via FTP / TFTP / HTTP / HTTPS / DHCP Option 66 / SIP PnP / TR-069
• Web-based management interface
• Packet capture (web-based)
• Configuration import/export
• Firmware upgrades
• Syslog system logging

Physical Specifications

• Dual RJ45 ports:
  • 1× Network (supports PoE 802.3af)
  • 1× PC (routing mode)
• PoE: 802.3af (Class 0, up to 12.95W)
• Power input: 9V–18V DC / 1A
• Main chipset: Broadcom
• Cable requirement: Cat5e or higher
• Operating temperature: -40°C to 70°C (-40°F to 158°F)
• Storage temperature: -40°C to 70°C
• Humidity: 10%–90%

Construction & Design

• Built from durable 14-gauge stainless steel
• Large ADA-compliant stainless steel keypad
• Adjustable volume control
• Customizable instruction card area
• Tamper-resistant locking system
• Moisture-resistant sealed design with gaskets
• Oversized cable entry with protective sealing
• Lever-operated hookswitch

Handset & Cord

• Armored handset cord (Bellcore standards)
• Withstands a minimum 1,000 lb pull force
• Stainless steel cord grommet for added security
• Adjustable cord lengths available:
  • Standard: 24”
  • Optional: 14”, 18”, 32”, 52”
• Quick-change handset bracket design

Mounting Options

• Built-in mounting plate for fast installation
• Optional accessories:
  • Wall Mount Conduit Plate
  • Counter Mount “L” Plate

Technical Specifications

• Protection rating: IP54
• Operating temperature: -40°C to +60°C (-40°F to +140°F)
• Humidity: ≤95%
• Atmospheric pressure: 80–110 kPa
• Frequency response: 250–3000 Hz
• Supply voltage: 48–60V
• Feed current: 25 mA
• Audio performance:
  • SLR ≤ 12 dB
  • RLR ≤ -1 dB
  • STMR ≥ 10 dB
• Ambient noise tolerance: ≤70 dB
• Ringing volume: ≥80 dB

Compatibility

• Works with:
  • Central Office (C.O.) analog lines
  • Analog PABX/KSU systems
  • Analog dial-tone systems

Dimensions & Weight

• Size: 11.25” H × 5.25” W × 6” D
  (287.5 × 135 × 140 mm)
• Weight: 8 lbs (3 kg)