SIP Protocol

 https://voip-sip-sdk.com/p_7354-how-to-implement-auto-answer-using-csharp.html

 https://tomeko.net/other/sipp/sipp_cheatsheet.php?lang=en working commands for sipp sipp -sf uas.xml -i 172.18.1.41 -p 5060 sipp 172.18.1.41 -sf uac.xml Regiteration :- https://openplatform.xyz/sipp_register_uas_and_uac.html sipp -i 172.18.1.41 -p 5060 -sf register_user_auth.xml -inf users.csv -infindex users.csv 0  sipp 172.18.1.41 -sf register_uac.xml -inf registar.csv      FreeSWITCH to SIPP Client communication commands    sipp -sf uac.xml -s 1003  172.18.1.221:5080 -trace_msg -l 15 -d 60000    Call Hold scenario  ------------  sipp -sf Hold-UAS/uac-hold.xml -s 1003  172.18.1.221:5080 -trace_msg -l 15 -d 60000 -m 1    reinvite from SIPP to freeSWITCH  --------------------------------    sudo sipp -sf Hold-UAC/uac-hold.xml -i 172.18.1.221 -s 1003 -m 1 172.18.1.221:5080 -trace_msg -l 15 -d 60000  

 https://telecom.altanai.com/category/session-initiation-protocol-sip-frameworks/

 https://www.dialogic.com/webhelp/BorderNet2020/2.2.0/WebHelp/sip_ov_2020IMG.htm

 https://sipsorcery-org.github.io/sipsorcery/articles/callholdtransfer.html  

 Connect the lan cable from ONT to Laptop Download Solarwinds TFTP Server Install the TFTP Server Goto File-> Configure (Check the TFTP Root Server directory as C:\TFTP-Root) Keep the voip_kernel.ko(file) in C:\TFTP-Root check the ipconfig in cmd (you will get 192.168.1.254 as Gateway IP and System IP as 192.168.1.64) 192.168.1.64 will acts a TFTP Server and your board will act as TFTP Client ssh to 192.168.1.254 using Putty Now do the tftp command in .254 putty window  tftp -gr voip_kernel.ko 192.168.1.64 Now check the MD5SUM on your windows and linux system both should match C:\TFTP-Root>certutil -hashfile voip_kernel.ko MD5 MD5 hash of voip_kernel.ko: 88e8f9781b246b4e63429f597e21c280 CertUtil: -hashfile command completed successfully. root@Cortina:/home/ONTUSER# md5sum voip_kernel.ko 88e8f9781b246b4e63429f597e21c280  voip_kernel.ko Both the MD5SUM macthes means both are identical files Original file md5sum of original file  ------ root@Cortina:/home/AdminGPO...