TELCO INTERFACE

Telco interface: DSU/CSU supported through RJ48S (eight-wire) type modular jack 
Line speed: 56 or 64 Kbps 
Transmit (Output) impedance: 135 ohm +/- 10% 
Receive (Input) impedance: 135 ohm +/- 10% 
Transmit (Output) level: 1.4V peak 
Range: DDS Extended (46db)

VOICE, GENERAL

Compression: ADPCM, selectable 16 Kbps (2 bit coding), 24 Kbps (3 bit coding) and CCITT standard 32 Kbps (4 bit coding) 
Frequency response: Relative to 1000 Hz level, +/- 3 dB, 300-2800 Hz 
Adjustible Voice Levels 
Dialing: Supports tone (DTMF) and pulse dialing 
Overload protection: Per FCC Part 68 requirements

VOICE INTERFACE, LOOP SIGNALING

User interface: Two-wire (single pair, Tip and Ring) supported through RJ-11C (six-wire) type modular jack 
Loop signaling types: FXO,FXS and private Line Automatic Ringdown (PLAR) 
Line impedance: 600 ohms 
Ringing Signal: 86 Vrms, 20 Hz, maximum ringing load of 2.0 ringer equivalences 
Input (Transmit) level: 0 dBm (600 ohms) at 1000 Hz produces a 0 dBm0 digital reference signal 
Output (Receive) level: a 0 dBm0 received digital reference signal produces either 0, -3, -6, -9 dBm (switch selectable) +/- 1 dB output (600 ohms) at Tip and Ring

PHYSICAL

Power: 90 to 240 VAC, 50/60 Hz, External switching power supply, UL, CSA, VDE listed 
Environment: 0 to 50 degrees C, up to 95% RH non-condensing 
Size: 2.5 x 10.25 x 9.75 in (H x W x D). 

 Weight: 2.5 lbs 
Indicators: Power, Loopback, Signal, Sync, Voice Busy, Data Xmt, Data Rcv 
Two year limited warranty. Extended warranty available. Meets Applicable Requirements of FCC 
Part 68 and Part 15, Subpart J. Specifications subject to

VOICE INTERFACE, E&M SIGNALING

User interface: Two-wire (signal pair, Tip and Ring), or four-wire with two pairs, transmit (Tip and Ring, and receive T1 and R1) supported through RJ-48 (eight-wire) type modular jack E&M signaling types: Type I or Type II, for all registered or "grandfathered" PBX tie trunk interfaces 
Input (Transmit) level: 0 dBm (600 ohms) at 1000 Hz produces a 0 dBm0 digital reference signal in two-wire mode. In four-wire mode, the transmit level may be either 0 dBm or -16 dBm, (switch selectable) 
Output (Receive) level: a 0 dBm0 received digital reference signal (1000 Hz) produces either 0, -3, -6, -9 dBm (switch selectable) +/- 1 dB output (600 ohms) at Tip and Ring in two-wire mode. In four-wire mode, a 0 dBm0 received level will produce either a -3 dBm or +7 dBm, (switch selectable)

DATA INTERFACE

User interface: RS-232C/RS-530, or V.35, supported through DB-25 connector 
Data speeds: 9.6, 14.4, 19.2, 28.8, or 38.4 Kbps for sync or async data. MBA, dynamic bandwidth allocation allows maximum throughput for sync data 
Synchronous data format: Any 
Asynchronous data format: 8 Bit, no parity, or 7 Bit with parity (odd or even) 
MAXimum Bandwidth Allocation (MBA,): The data channel can be optioned to operate at the maximum available bandwidth based on voice channel use, synchronous only