Multi-Tech Systems MVP-2410 ユーザーズマニュアル

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The tables below describes all fields in the general SPP Call Signaling screen. 
 

 

Single Port Protocol (SPP) 

 

Mode Direct, 

Client, or 

Registrar 

SPP voip systems can operate 
in two modes:  
in the direct mode, where all 
voip gateways have static IP 
addresses assigned to them; or 
in the registrar/client mode, 
where one voip gateway 
serves as registrar and all 
other gateways, being its 
clients, point to that registrar.  
The registrar assigns IP 
addresses dynamically. 

General Options

 

 

Port  

The UDP port on which data 
transmission will occur.  Each 
client voip has its own port.  If 
two client voips are both 
behind the same firewall, then 
they must have different ports 
assigned to them. 
If there are two clients and 
each is behind a different 
firewall, then the clients could 
have different port numbers or 
the same port number. 
(Default port number = 10000.) 

Re-trans-

mission  

(in ms) 

 

If packets are lost (as indicated 
by absence of an 
acknowledgment) then the 
endpoint will retransmit the 
lost packets after this 
designated time duration has 
elapsed.  (Default value = 2000 
milliseconds.) 

Max  

Re-trans- 

mission 

 

Number of times the voip will 
re-transmit a lost packet (if no 
acknowledgment has been 
received).  (Default value = 3)