Trendnet VoIP Gateway User Manual

TVP-221H User’s Guide 

36 

and a remote phone rings without digits being dialed. This is a useful tool for 
customer requirements such as:  

•  The provision of an Off-Premises eXtension (OPX) from a private 

branch exchange (PBX). Connection PLAR allows remote users on 
Foreign Exchange Station (FXS) ports to look to a central PBX like 
physical extensions.  

•  The provision of dial-tone from a remote PBX. Many customers want to 

offer toll-bypass VoIP services without having the routers provide dial-
tone or change their existing dialplan. This allows stations at remote sites 
to look like they are physically connected stations to a PBX.  

•  Dial in PLAR is a switched VoIP call. The call is setup on an as-needed 

basis. With connection PLAR, no bandwidth is consumed while the 
phone is on hook. When a phone connected to a POTS dial peer is taken 
off-hook, the call is automatically connected and the remote phone 
begins to ring.  

•  Dial in PLAR can work between any type or combination of Foreign 

Exchange Office (FXO), and/or FXS) telephony port / device. 

•  Dial in PLAR does not collect digits from the connected Telephony 

device. Once a dial plan has been entered into the ATPM, PLAR can be 
enabled without need to alter the dial plan. Note: All other Dial plans set 
for this starting port will become ineffective. 

 

 

Store Dial Plan - will store the Dial Plan from DRAM / Working Memory to 
Flash / Non-Volatile Storage 
 
Always be sure to Store, the Dial Plan from working memory / DRAM to 
Flash Memory / Non-Volatile Storage. Storing to Non-Volatile Storage 
ensures that you have saved the dial plan which can then be restored on 
request. 
 
Note:  The Dial Plan in the Non-Volatile Storage is not the working Dial Plan. 
If the Gateway is turned off for what ever reason, the Dial Plan from Non-
Volatile Storage is copied into the Flash / Working memory and processes 
phone calls accordingly