Prison telephones

Brief Introduction

The SC-JL01 Prison Telephone is ideal for indoor use in secure environments like prisons and banks.  Its stainless steel casing and integrated design make it highly durable and tamper-resistant.  Using standard IP/RTP voice transmission, it’s compatible with leading SIP-based IP PBX, soft switch, and IMS platforms including Asterisk, 3CX, and Elastix.

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Description


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Product Features

  1. Casing: Constructed from durable, corrosion-resistant SUS304 stainless steel in a single, robust, tamper-proof unit.
  2. Stores a single speed dial group, user-configurable through an IE browser interface.
  3. Auto-answers calls and disconnects automatically upon call termination, preventing line blockage.
  4. Adheres to the standard SIP protocol.
  5. Includes smart DSS keys (speed dial, intercom, etc.).
  6. Powered by PoE or 12V; no external power adapter needed.

Basic Parameters

Size240*170*40MM
Weight2KG
Audio output3W
Shell materialstainless steel
Keyboard materialstainless steel
colorSilver
Communication modeSIP protocol, analog
Installation methodWall-mounted
Power supplyPOE and DC are optional

Product Configuration

Network
  • SIP v1 (RFC2543), v2(RFC3261)
  • IP/TCP/UDP/RTP/RTCP
  • IP/ICMP/ARP/RARP/SNTP
  • TFTP Client/DHCP Client
  • Telnet/HTTP Server
  • DNS Client
Audio
  • G.711: 64k bit/s (PCM)
  • G.723.1: 6.3k / 5.3k bit/s
  • G.726: 16k / 24k / 32k / 40k bit/s (ADPCM)
  • G.729 A: 8k bit/s (CS-ACELP)
  • G.729B: adds VAD & CNG to G.729
Special Features
  • Hands-free communication enabled.
  • One-button dialing using speed dial.
  • Automatic call answering (configurable for single lines).
  • Voicemail available (requires server support).
  • Local three-party conference calls supported.

Dimensions


Q: Does this product have a quick dial function?
A: Yes, this product supports one-touch dialing.