I played around with creating a 2 Meter SSB Beacon. I based it on Allstar to enable beacon interconnect. It is a tone and voice beacon. Below is the script and interconnect to a ICOM7100. Use TTS voicerss.org to create wav file. I have attached pictures for the ICOM7100 configuration.

Beacon Script:

#!/bin/bash asterisk -rx "rpt cmd 48005 cop 48,!0/2000,5,5,9,!0/2000,5,5,8,!0/2000,5,5,7,!0/2000,5,5,6,!0/2000,5,5,4"| grep executed
sleep 20.0
asterisk -rx "rpt cmd 48005 cop 48,!0/2000,5,5,9,!0/2000,5,5,8,!0/2000,5,5,7,!0/2000,5,5,6,!0/2000,5,5,4"| grep executed
sleep 20.0
asterisk -rx "rpt playback 48005 /etc/asterisk/local/ssbbeacon"| grep executed

ICOM7100 ACC Socket wiring:

2 GND
7 PPT
11 MIC
12 AUDIO OUT
13 COS