How to configure connection PLAR for IOS VoIP gateways

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Nov 18, 2009 6:27 PM
Jun 22nd, 2009

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Private-line automatic ringdown (PLAR) circuits have statically configured endpoints and do not require that the user dial in order to connect calls. The connection plar command provides a  mechanism to create a switched VoIP call without digit dialing.  PLAR connections are often referred to as a bat-phone type of application.  This is when a phone (or DS0) goes off-hook and a remote phone rings (or remote  DS0 goes off-hook) 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 dial plan. This allows stations at remote sites to look    like they are physically connected stations to a PBX.

Refer toConfiguring Connection PLAR for VoIP Gateways for more information on how to configure these features.

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Posted June 22, 2009 at 5:28 PM
Updated November 18, 2009 at 6:27 PM
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