Citel 6000 Guía Del Usuario

 

PBXgateway™ & EXTender™6000 System Administrator’s Guide

 

9

 

 

The PBXgateway is designed to connect over a wide variety of third party network devices using three 
types of network connections: 

•  Synchronous-Serial connection (V.35, RS-530, RS-232) 
•  Asynchronous-Serial connection (RS-232) 
•  IP (10/100BaseT Ethernet) 

At both the branch office and corporate sites, all voice and signaling information is placed into digital data 
packets, which are then sent out over the data network. This data is transmitted digitally over the 
connection as a series of “ones” and “zeroes”. The data packets are encapsulated within a MCK 
Proprietary protocol called Remote Voice Protocol

™  (RVP) 

 
The most important consideration for packetizing voice is defining when each character begins. 

One way to do this is by providing a clock signal. At a precise time, the transmission starts. This is called 
Synchronous (see page 14).  In Asynchronous transmission, there is no clocking signal.  The receiving 
terminal knows what’s what because each character begins with a start bit and ends with a stop bit (see 
page 15). 

The voice and signaling packets are sent using Internet Protocol (IP) over the packet-switched data 
networks as opposed to using the traditional circuit-switched protocols. Voice packets get delivered to the 
alternate device using the RVP. This protocol handles the timing and delivery of the packets (See page 
16 for more information).