Multi-Tech Systems MVPGSM-2 User Manual

 

Multi-Tech Systems, Inc. 

MVPGSM 

89 

 

RJ-45 connector plugs into Command Port of MultiVOIP GSM. 
DB-9 connector plugs into serial port of command PC (which runs MultiVOIP GSM configuration 
software). 

The functions of the individual conductors of the MultiVOIP GSM’s Ethernet port are shown on a pin-by-pin basis 
below. 

1 

TD+ Data Transmit Positive 

2 

TD- Data Transmit Negative 

3 

RD+ Data Receive Positive 

6 

RD- Data Receive Negative 

The following description of port number assignments for Internet Protocol (IP) communication is taken from 
the Internet Assigned Numbers Authority (IANA) web site (www.iana.org).   

“The Well Known Ports are assigned by the IANA and on most systems can only be used by system (or root) 
processes or by programs executed by privileged users. Ports are used in the TCP [RFC793] to name the ends 
of logical connections which carry long term conversations. For the purpose of providing services to unknown 
callers, a service contact port is defined. This list specifies the port used by the server process as its contact 
port. The contact port is sometimes called the "well-known port". To the extent possible, these same port 
assignments are used with the UDP [RFC768]. The range for assigned ports managed by the IANA is 0-1023.” 

Well-known port numbers especially pertinent to MultiVOIP GSM operation are listed below. 

telnet 23 
tftp 69 
snmp 161 
snmp tray 

162 

http 80 
ftp (simple) 

115 

SIP 5060 
SysLog 514 

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