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Inmate Telephone
Brief Introduction
The SC-CR05 inmate telephone is ideal for use in high-security indoor environments such as prisons, laboratories, and banks. Its durable stainless steel body effectively resists damage and reduces maintenance costs. Voice transmission utilizes standard IP/RTP protocols, making it compatible with most SIP-based IP PBX/softswitch/IMS platforms, reducing procurement costs.
Product Features
- The inmate telephones features a cold-rolled steel casing and is manufactured to high standards, offering enhanced resistance to damage and ensuring the primary function of communication is always maintained. It is a high-reliability product with a long mean time between failures (MTBF).
- A hotline number can be stored for emergency calls, and users can customize it through the Internet Explorer browser.
- Automatically answer incoming calls and automatically hang up on busy signals, reducing line congestion and improving communication efficiency.
- Equipped with intelligent DSS buttons (speed dial, intercom, etc.).
- Supports POE or 12V power supply, eliminating the need for an external power supply, improving security and reducing damage.
- One-touch IP broadcasting for easy operation and convenient location tracking.
Basic Parameters
| Size | 260*170*42MM |
| Embedded size | 225*136*40mm |
| Weight | 2KG |
| Audio output | 3W |
| Shell material | stainless steel |
| Keyboard material | stainless steel |
| color | Silver |
| Communication mode | SIP protocol or analog |
| Power supply | POE/DC |
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
Audio
Compatible with multiple audio codecs:
- 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
- The housing is made of 304 stainless steel with a brushed finish for wear and corrosion resistance, and the integrated design resists vandalism.
- Surpport speed dial (built-in speed dial button)
- Surpport automatic answering (configurable for individual lines)
- Surpport voicemail (requires server support)
Dimensions

Q:Can this product be customized?
A:This product can be customized, such as removing the numeric buttons or adding emergency call buttons. Please contact us to discuss your requirements.
Q:How long does it take to produce an order?
A:We have a mature production line, and delivery time is typically 3-15 days, depending on the order quantity.








