RPI

Overclocked raspberry pi 4 running raspbian buster with a Sandisk U1 MicroSD card.

pi@raspberrypi:~ $ cat /etc/issue
Raspbian GNU/Linux 12 \n \l

pi@raspberrypi:~ $ uname -a
Linux pisip.govoip.ro 6.1.0-rpi8-rpi-v8 #1 SMP PREEMPT Debian 1:6.1.73-1+rpt1 (2024-01-25) aarch64 GNU/Linux

RPI repo

Add repo key:

wget -qO - https://repo.govoip.ro/repo.key | gpg --dearmor | sudo tee /etc/apt/keyrings/govoip.gpg > /dev/null

Add repo:

echo 'deb [arch=arm64, signed-by=/etc/apt/keyrings/govoip.gpg] https://repo.govoip.ro bookworm main' | sudo tee --append /etc/apt/sources.list > /dev/null

Get repo:

sudo apt-get update

sudo apt-get install kamailio
sudo apt-get install ngcp-rtpengine
sudo apt-get install opensips

1. Kamailio .debs

• kamailio 5.8.2

2. RTPEngine .debs

• rtpengine 12.4.1

3. OpenSIPs .debs

• opensips 3.5.0-rc1

RPI test

Test configuration

.
├── README.md
└── sipp
    ├── csv		-> SIPP configured users and passwords
    │   ├── uac.csv
    │   └── uas.csv
    ├── defines		-> SIPP configured parameters and IPs
    ├── defines1
    ├── defines2
    ├── defines3
    ├── defines4
    ├── uac.sh		-> script for running uac
    ├── uas.sh		-> script for running uas
    └── xml		-> SIPP xml sceanrios
        ├── p2p			-> INVITE test without RTP
        │   ├── uac.xml
        │   └── uas.xml
        ├── p2p_rtp		-> INVITE test with RTP
        │   ├── long.pcap
        │   ├── uac.xml
        │   └── uas.xml
        ├── p2p_rtp_reinvite	-> INVITE test with RTP and RE-INVITE with RTP
        │   ├── long.pcap
        │   ├── uac.xml
        │   └── uas.xml
        ├── p2p_rtp_reinvite_t38_rtp	-> INVITE test with RTP and RE-INVITE with T38<->RTP
        │   ├── long.pcap
        │   ├── t38.pcap
        │   ├── uac.xml
        │   └── uas.xml
        ├── p2p_srtp		-> INVITE test with SRTP
        │   ├── uac.xml
        │   └── uas.xml
        ├── reg			-> REGISTER test
        │   ├── uac.xml
        │   └── uas.xml
        └── sub			-> SUBSCRIBE/NOTIFY test
            └── uac.xml

Test run

./uas.sh xml/reg/
./uac.sh xml/reg/
...
./uas.sh xml/p2p_srtp/
./uac.sh xml/p2p_srtp/
...
./uac.sh xml/sub/
...

1. REGISTER test

              REGISTER
SIPP UAC/UAS  ------->  RPI SIP SERVER

               200 OK
SIPP UAC/UAS  <-------  RPI SIP SERVER

2. INVITE test without media

           INVITE                   INVITE
SIPP UAC  ------->  RPI SIP SERVER -------> SIPP UAS

           200 OK                   200 OK
SIPP UAC  <-------  RPI SIP SERVER <------- SIPP UAS

            ACK                      ACK
SIPP UAC  ------->  RPI SIP SERVER -------> SIPP UAS

<-------------------- Pause --------------------->

            BYE                      BYE
SIPP UAC  ------->  RPI SIP SERVER -------> SIPP UAS

           200 OK                   200 OK
SIPP UAC  <-------  RPI SIP SERVER <------- SIPP UAS

3. INVITE test with RTP media

Same as 2. but with RTP instead of Pause

4. INVITE test with SRTP media (use SIPP from commit b2f7d2a onwards)

Same as 2. but with SRTP instead of Pause

5. RE-INVITE test with RTP media

Same as 2. but with RTP instead of Pause and RE-INVITE updates UAC RTP port.
RTP media continues to be sent after RE-INVITE on new UAC port

6. SUBSCRIBE/NOTIFY test

          SUBSCRIBE
SIPP UAC  -------->  RPI SIP SERVER
           200 OK
SIPP UAC  <--------  RPI SIP SERVER
           NOTIFY
SIPP UAC  <--------  RPI SIP SERVER
           200 OK
SIPP UAC  -------->  RPI SIP SERVER