Stealthphone Landline

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Stealthphone Landline

Stealthphone Landline

Stealthphone Landline

Stealthphone Landline is recommended for major corporations and state organizations.

Stealthphone Landline ensures the security of your phone communications over existing shared phone networks within office PBX and PSTN.

Stealthphone Landline is designed for a safe encrypted communication among subscribers who use the same phone set. 

Stealthphone Landline is recommended for major corporations and state organizations.

Stealthphone Landline ensures the security of your phone communications over existing shared phone networks within office PBX and PSTN.

Stealthphone Landline is designed for a safe encrypted communication among subscribers who use the same phone set.

To switch to encrypted mode, you need to press just one key on the Stealthphone Landline before making a call. The phone of the second subscriber automatically recognizes the encrypted mode request and switches to encrypted mode.

The second subscriber must have the same phone set, otherwise the conversation won’t be encrypted.

Main technical specifications


Voice signal security scheme

vocoder – encryption device - modem

Communication mode (in open and secure modes)

Full duplex

Phone line

Type

analog; double-wire; 600 ohm; 300-3400 Hz

Plug

RJ-11 (6 contacts)

Indication, control

Indication

Led - 6 pcs.

Control buttons

Type

Non-locking

Number

four

Cryptographic characteristics

Encryption algorithm

Proprietary encryption algorithm designed by Mobile Trust Telecommunications

Key system

Two-level (session key + external key DS 1992)

Key distribution method

Elliptic functions

Key length

256 bit

Key strength

1077

Wipe option

After the session is over the keys are deleted

Vocoder

Voice compression algorithm

algebraic CELP (4800 bps); with harmonic excitation (2400 bps)

Syllable intelligibility of voice

97% (4800 bps); 87% (2400 bps)

Resistance to background acoustic noises

Yes

Modem

Line rate

4800/9600 bps

Modulation (protocol)

V.32 (4800/9600 bps); V.34 (4800/9600 bps)

Entry time

~ 13 sec

Delay in encrypted mode

Not more than 80 мс

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