pstngw - H.323 to PSTN gateway

pstngw [options] [ line1addr ... ]

pstngw is a very simple PSTN to H.323 gateway program using the OpenH323 library. It allows H.323 clients to make outgoing calls, and incoming calls to be routed to a specific H.323 client.

To make an outgoing call, you must have a client that supports PSTN gateways. If a H.323 client calls the gateway with no gateway information, and the -d option was used then that number is automatically called.

All of the command line options to pstngw

can be specified in long form, and the most commonly used options also have single character equivalents. The long forms can also be used in the pstngw configuration file.

--aec, level

Set the AEC (audio echo cancellation) level when using a Quicknet card. level must be in the range 0 through 3. The default value is 2 (medium).

-c, --calling-tone

Enable PSTN calling tones translation.

-C, --country code

Set the country settings for PSTN card.

-d, --dial phone

Default number to call.

-D, --disable codec

Disable the specified codec (may be used multiple times).

-f, --force-dial

Force dial number in call.

-h, --help

Show help message.

-i, --interface interface

Only bind to the specified network interface address. By default, pstngw automatically listens for incoming calls on all TCP/IP network interfaces available on the host machine.

-j, --jitter delay

Set jitter buffer to delay ms. By default, the jitter buffer is set to 50 ms.

-n, --numframes n

Number of audio frames per ethernet packet.

-o, --output filename

Write trace output (enabled with the -t option) to the specified file rather than to stderr.

-P, --prefer codec

Prefer the specified codec (may be used multiple times).

-q, --quicknet num

Use the specified Linux telephony device (/dev/phonenum).

--save

Save arguments in configuration file.

--tos value

Set the Type Of Service in outgoing RTP packets to the specified value.

-t, --trace

Enable debug tracing, which displays messages at run-time to assist in debugging or problem identification. Specifying this option multiple time increases the amount of information displayed. pstngw has trace statements up to level 5. Use the -o option to write the trace information to a file rather than to stderr.

-u, --user name

Set local endpoint alias name. Can be used multiple times to add multiple aliases. By default, the alias list contains a single entry with the current user's login name.

-v, --vpb dev

Use Voicetronics VPB4.

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