daemon is a simple wrapper daemon that allows to use standard

daemon is a simple wrapper daemon that allows use of

on RFCOMM connection.

via a RFCOMM connection.

In the client mode,

In client mode,

opens an RFCOMM connection to the specified server's

opens a RFCOMM connection to the specified servers

Once RFCOMM connection is established,

Once the connection is established,

The

Likewise,

in its turn operates over the RFCOMM connection just like it would operate

operates over the RFCOMM connection just like it would over a standard

over the standard serial port thus allowing user to

serial port, thus allowing a user to

In the server mode,

In server mode,

opens an RFCOMM socket and listens for incomming connections from remote clients.

opens a RFCOMM socket and listens for incoming connections from remote clients.

Once the new incomming connection is accepted,

Once the new incoming connection is accepted,

The

Likewise,

in its turn operates over the RFCOMM connection just like it would operate over

operates over the RFCOMM connection just like it would over a standard

the standard serial port thus providing network connectivity to remote clients.

serial port, thus providing network connectivity to remote clients.

In the client mode, this required option specifies the address of the remote

In client mode, this required option specifies the address of the remote

In the server mode, this option can be used to specify the local

In server mode, this option can be used to specify the local

By default, server will listen on

By default, in server mode, the daemon will listen on

If name was specified then the

If a hostname is specified, it will attempt to be resolved

.Nm

via

utility will attempt to resolve the name via

In both client and server modes, this required option specifies RFCOMM channel

In both client and server modes, this required option specifies the RFCOMM

to connect to or listen on.

channel to connect to or listen on.

In the server mode, RFCOMM channel should be a number between 1 and 30.

In server mode, the channel should be a number between 1 and 30.

In the client mode, RFCOMM channel could either be a number between 1 and 30

In client mode, the channel could either be a number between 1 and 30

(for DialUp Networking service) and

(Dial-Up Networking) and

(for LAN Access Using PPP service).

(LAN Access Using PPP).

If service name was specified instead of numeric RFCOMM channel then

If a service name is used instead of a numeric channel number, then

utility will try to obtain RFCOMM channel for the service via Service

will try to obtain a RFCOMM channel number via SDP

Discovery Protocol.

(Service Discovery Protocol).

Act as an RFCOMM client.

Act as a RFCOMM client.

Do not detach from the controlling terminal, i.e., run in foreground.

Do not detach from the controlling terminal, i.e., run in the foreground.

In the server mode register the Serial Port (SP) service in addition to the

In server mode, register the

LAN Access Using PPP (LAN) service.

.Cm SP

It appears that some cell phones are using so called

(Serial Port) service in addition to the

.Cm LAN

(LAN Access Using PPP) service.

.Pp

It appears that some cell phones are using a so-called

In this scenario the user is trying to connect his cell phone to the Internet,

In this scenario, the user is trying to connect his cell phone to the Internet,

and, user's host computer is acting as the gateway server.

while the host computer is acting as the gateway server.

using the LAN service.

using the

Instead the user's host computer must

.Cm LAN

service.  Instead the host computer must

the phone by connecting to the phone's SP service.

the phone by connecting to the cell phones'

.Cm SP

service.

connection back to the user's host computer.

connection back to the host computer.

The phone really wants to use LAN service, but for whatever reason it looks

The phone really wants to use the

for the SP service on the user's host computer.

.Cm LAN

This brain damaged behavior was reported for Nokia 6600 and Sony/Ericsson P900.

service, but for whatever reason it looks

for the

.Cm SP

service on the host computer anyways.  This brain-damaged behavior was

reported for the following cell phone models:

.Bd -literal -offset indent

* Nokia 6600

* Sony/Ericsson P900

.Ed

Act as an RFCOMM server.

Act as a RFCOMM server.

This option maps directly onto

This option maps directly to the

command line option and tells

command-line option and tells

This option only works in the client mode.

This option only works in client mode.

.Em every

.Em every other

other label.

label.

In this example, RFCOMM connection

In this example, a RFCOMM connection

is used as a null-modem connection between client and server.

is used as a null-modem connection between a client and a server.

Both client

Both the client

and server will start talking PPP right after RFCOMM connection was established.

and server will talk PPP right after the RFCOMM connection is established.

supports both LAN and DUN (Dial-Up Networking) access.

supports both

The client's configuration for the LAN access is very similar to server's and

.Cm LAN

might look like this.

(LAN Access Using PPP)

and

.Cm DUN

(Dial-Up Networking) access.

The client's configuration for

.Cm LAN

access is very similar to servers' and may resemble this:

The client's configuration for the DUN access is different.

The client configuration for

.Cm DUN

access is different.

To open a PPP session, client must dial a number.

To open a PPP session, the client must dial a number.

The example of such configuration is shown below.

An example configuration is shown below:

Note that by adjusting the initialization string, one can make CSD (Circuit

Note that by adjusting the initialization string, one can make a CSD (Circuit

Once the incomming connection has been accepted,

Once the incoming connection has been accepted,

mode with

mode with the

.Dq Li rfcomm-server

.Em rfcomm-server

Once connected, the

Once connected,

mode with

mode with the

.Dq Li rfcomm-client

.Em rfcomm-client

utility in server mode will try to register Bluetooth LAN Access Over PPP

utility in server mode will try to register the Bluetooth LAN Access Over

service with local SPD daemon.

PPP service with the local SDP daemon.  If the local SDP daemon is not running,

If local SDP daemon is not running the

utility will exit with error.

will exit with an error.