8-Port Interoperability Solution

  • 4 modules for 8-ports in a small form factor
  • 4-wire connectivity (intercom, radio and audio sources)
  • VoIP connectivity (SIP and RoIP)
  • Digital radio connectivity (Digital Voice Systems’ AMBE™ 3003 VoCoder technology)
  • Radio Bridging: port-to-port, port-to-multi-port, Radio-over-IP (RoIP), analog-to-digital, digital-to-digital
  • Radio Interfacing: trigger radios with 4-wire port signaling, DMR and P25 compatibility
  • IP Interfacing: Voice-over-IP (VoIP), RoIP, Unicast, Multicast, SIP (8 assignable SIP accounts per IP module)
  • Module design and highly configurable
Item Part Number:

CG-X4-M4W1: X4 2 port 4-wire Gateway,

CG-X4-M4W2: X4 4 port 4-wire Gateway,

CG-X4-M4W3: X4 6 port 4-wire Gateway,

CG-X4-M4W4: X4 8 port 4-wire Gateway,

CG-X4-MIP1: X4 1 port IP 1 port 4-wire Gateway,

CG-X4-MIP1-M4W1: X4 1 port IP 3 ports 4-wire Gateway,

CG-X4-MIP1-M4W2: X4 1 port IP 5 ports 4-wire Gateway,

CG-X4-MIP1-M4W3: X4 1 port IP 7 ports 4-wire Gateway

The Clear-Com Gateway platform consists of the compact CG-X1 and CG-X4 devices for connecting 2-way radios, intercoms, telephones and IP networks. The CG-X4 carries a higher port density of 8 ports in a small form factor. Up to 16 ports can be housed in a single, standard 19” 1RU space with optional rack mount kit.

Technical Specifications

4-Wire Audio Ports

Input/Output Levels: -16 to 7 dBm @ 600 Ohms, adjustable in 0.1dB steps
Frequency Response: 5 to 3400Hz; +/-1 dB ref. to 1kHz
Isolation: >60 dB
Idle Noise: <20 dbrnC0
Input Impedance: 600 Ohms or 100 Ohms, software selectable each port
Output Impedance: 600 Ohms, true differential
Hybrid Return Loss: 25dB minimum

Port Signaling

M-Lead Relay:
Optical: Coupled MOS
Maximum Contact Voltage: 60V DC, 20V AC
Maximum Current: 50mA

E-Lead Input:
Active High Input: Open circuit or >+1.8V DC
Active Low Input: Ground, negative voltage or <+0.32V DC
Clear-Com Signaling: Eclipse and HelixNet
DTMF Signaling
E&M Lead (COR & PTT) Signaling

Voice-over-IP Module

IP Ports:
Format: Supports 10Base-T and 100Base-T
Networking Stack: TCP/IPv4
Protocols: SIP, SDP, RTP, IPV67 and STUN (Simple Traversal of UDP through Network Address Translation)
Codecs: G.711 (fully compatible), G.726 (16/24/33/40 kbps), G.722, DVI4 (narrow/HD/Ultra HD), Linear PCM
SIP Accounts: 8 per module

Digital Radio Module

VoCoder: 3-channel
Digital Voice Systems: AMBE-3003™ Vocoder encode or decode AMBE™
Input/Output: Analog and Serial
Encode/Decode: P25, DMR

Interface and Connectors

LAN: RJ45 (port 7)
PC Configuration: USB Port Type B
4-Wire: RJ45

Power Supply

Switchable plug-in adapter with locking connector and IEC cord
Input Voltage: 85 – 264V AC; 100 – 240V AC; nominal
Output Voltage: 12V; 1.67A
MTBF (min.): 200,000 hours demonstrated


Operating: 32° – +122°F (0° – +50°C)
Storage: -40° – +176°F (-40° – +80°C)
Humidity: 0 – 95%, non-condensing


CG-X4: 5.7 x 1.4 x 13in (WxHxD)

(144.8mm x 35.6mm x 330.2mm)


CG-X4: 4.75lbs (2.15kg)

Associated Products

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