The Telos Link solves the problem of interconnecting production intercom systems with dial-up telephone lines. Anyone with access to a telephone, even a cellular phone, can instantly and automatically be connected with your intercom. Digital auto-nulling hybrids on both the telephone and intercom audio paths allows connections to be made without the usual gain and feedback problems, while maintaining natural, full-duplex operation. The result is significantly improved communication capability.
SystemTrue digital. Second generation Texas Instruments
TMS320C25 processor. 8kHz sampling rate. Digital
input and output gain processing, filtering.
Trans-hybrid Loss>40dB with pink noise or voice as test input. Test
set-up as specified in our Telephone Q & A.
Send Level to Phone Line-10dBm average level. Maintained by internal digital AGC.
Frequency Response (caller to intercom)
200–3400Hz, ±1 dB.
Noise and Distortion (caller to intercom)
Distortion: <0. 5% THD+N, measured @ 1kHz at
any caller level from -48dBm to -8dBm.
Signal-to-Noise>60dB referenced to -18dBm phone level. >72 dB
referenced to OdBm phone line level.
Monitor Audio OutputThree-pin male XLR connector. Active differential.
Typical output level OdBm. Will drive 600? .
Intercom InterfaceBi-lateral current source interface for standard
intercom systems. Three-pin XLR female connector.
Selectable via front panel switch for channel 1,
channel 2, or balanced mode operation. Intercom
send and receive level variable from approximately
-20dBv to -OdBv.
Channel 2/wet mode provides 18V at up to l00ma
to power one or two standard belt packs.
Four-wire interface is provided via rear panel DB-15 connector.
Unbalanced, 600?, level variable from -20dBv to -OdBv.
Physical Dimensions 7 1?4” x 1 1?2” x 9 15?32”
18.4cm x 3.8cm x 24cm
Weight3 pounds (8 pounds shipping weight)
1.3 kilograms (3.6 kilograms shipping weight)
Power supplyExternal plug transformer. 9V DC, 500ma. Available
for 117V/60Hz or 230V/50Hz AC.
Optional AccessoriesRack mount kits that hold one or two Telos Links
in a single rack unit. Dual redundant power supply
to power up to ten Telos Links.
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