A P P E N D I X F

S P E C I F I C A T I O N S

System

24-CA

48-CA

48-CVA

 

 

 

 

Analog trunks

2

4

4

 

 

 

 

VoIP trunks

0

0

4

 

 

 

 

Analog extension interfaces

4

8

8

 

 

 

 

LAN interface

0

RJ-45 Ethernet

 

 

 

 

USB interface

1

1

1

 

 

 

 

Serial interface (RS-232, 9-pin)

1

1

1

 

 

 

 

Memory expansion

1, 3, 4.5 and 9 hour memory cards

Music input

Phono jack (1/8" mono) or stored .wav file

 

 

PA output

Phono jack (1/8" mono) or stored .wav file

 

 

Power source

120 VAC, 60 Hz — In/16 VAC, 1.5 A — Out

 

 

Power-failure line to

Extension 4 connects to Line 1

extension jacks

 

 

 

VoIP features (models with VoIP trunks only)

Embedded SIP server and user agents

Integrated registrar

Can use external SIP servers as required

RTP

G.711µ-law/A-law, G.726 (32 Kbps), G.729a

G.168 echo cancellation

VAD, silence suppression

Adaptive jitter buffer

Packet loss concealment

Fax tone detection

A P P E N D I X F

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Talkswitch 48-CA/CVA manual Specification S, System 24-CA 48-CA 48-CVA