How to Create PJSIP Endpoints with Templates on Debian 12

Step 7: Check the endpoints by Using Softwares as shown in below image

Step 8: Now create 2 templates by editing the pjsip.conf file

root@linuxhelp:~# vim /etc/asterisk/pjsip.conf
[167](customtemplate)(customtemplate2)
auth_type=userpass
type=auth
username=167
password=123456
type=aor
qualify_frequency=60
max_contacts=1
remove_existing=yes
qualify_timeout=3.0
authenticate_qualify=no
[customtemplate](!)
context=internal
type=endpoint
language=en
deny=0.0.0.0/0.0.0.0
trust_id_inbound=yes
send_rpid=no
transport=tcp_transport
rtcp_mux=no
call_group=
pickup_group=
disallow=all
[customtemplate2](!)
allow=ulaw,alaw,gsm
mailboxes=300
permit=0.0.0.0/0.0.0.0
ice_support=no
use_avpf=no
dtls_cert_file=
dtls_private_key=
dtls_ca_file=
dtls_setup=actpass
dtls_verify=no
media_encryption=no
message_context=
subscribe_context=
allow_subscribe=yes
rtp_symmetric=yes
force_rport=yes
rewrite_contact=yes
direct_media=no
media_use_received_transport=no
[168](customtemplate)(customtemplate2)
auth_type=userpass
type=auth
username=168
password=123456
type=aor
qualify_frequency=60
max_contacts=1
remove_existing=yes
qualify_timeout=3.0
authenticate_qualify=no
[tcp_transport]
type=transport ; Must be of type 'transport'
protocol=tcp
bind=0.0.0.0
tos=cs3
cos=3
allow_reload=false
[udp_transport]
type=transport ; Must be of type 'transport'
protocol=udp
bind=0.0.0.0
tos=cs3
cos=3
allow_reload=false

Step 9: Login to the Asterisk CLI mode and Reload PJSIP by using the below commands

root@linuxhelp:~# asterisk -rvvvvvvvvvvvvvvvvvvv
Asterisk 20.4.0, Copyright (C) 1999 - 2022, Sangoma Technologies Corporation and others.
Created by Mark Spencer <markster@digium.com>
Asterisk comes with ABSOLUTELY NO WARRANTY; type 'core show warranty' for details.
This is free software, with components licensed under the GNU General Public
License version 2 and other licenses; you are welcome to redistribute it under
certain conditions. Type 'core show license' for details.
=========================================================================
Connected to Asterisk 20.4.0 currently running on linuxhelp (pid = 931)
linuxhelp*CLI>

linuxhelp*CLI> pjsip reload
Module 'res_pjsip.so' reloaded successfully.
Module 'res_pjsip_authenticator_digest.so' reloaded successfully.
Module 'res_pjsip_endpoint_identifier_ip.so' reloaded successfully.
Module 'res_pjsip_mwi.so' reloaded successfully.
Module 'res_pjsip_notify.so' reloaded successfully.
Module 'res_pjsip_outbound_publish.so' reloaded successfully.
Module 'res_pjsip_publish_asterisk.so' reloaded successfully.
Module 'res_pjsip_outbound_registration.so' reloaded successfully.
    -- Reloading module 'res_pjsip.so' (Basic SIP resource)
[Sep  1 08:20:58] NOTICE[2965]: sorcery.c:1348 sorcery_object_load: Type 'system' is not reloadable, maintaining previous values
    -- Reloading module 'res_pjsip_authenticator_digest.so' (PJSIP authentication resource)
    -- Reloading module 'res_pjsip_endpoint_identifier_ip.so' (PJSIP IP endpoint identifier)
    -- Reloading module 'res_pjsip_mwi.so' (PJSIP MWI resource)
    -- Reloading module 'res_pjsip_notify.so' (CLI/AMI PJSIP NOTIFY Support)
    -- Reloading module 'res_pjsip_outbound_publish.so' (PJSIP Outbound Publish Support)
    -- Reloading module 'res_pjsip_publish_asterisk.so' (PJSIP Asterisk Event PUBLISH Support)
    -- Reloading module 'res_pjsip_outbound_registration.so' (PJSIP Outbound Registration Support)

Step 10: Show endpoints by running the below command

linuxhelp*CLI> pjsip show endpoints
Endpoint:  <Endpoint/CID.....................................>  <State.....>  <Channels.>
    I/OAuth:  <AuthId/UserName...........................................................>
        Aor:  <Aor............................................>  <MaxContact>
      Contact:  <Aor/ContactUri..........................> <Hash....> <Status> <RTT(ms)..>
  Transport:  <TransportId........>  <Type>  <cos>  <tos>  <BindAddress..................>
   Identify:  <Identify/Endpoint.........................................................>
        Match:  <criteria.........................>
    Channel:  <ChannelId......................................>  <State.....>  <Time.....>
        Exten: <DialedExten...........>  CLCID: <ConnectedLineCID.......>
==========================================================================================
 Endpoint:  167/167                                              Not in use    0 of inf
     InAuth:  167/167
        Aor:  167                                                1
      Contact:  167/sip:167@192.168.6.102:57232;transport= 3c1e740b65 Avail         8.047
  Transport:  tcp_transport             tcp      3     96  0.0.0.0:5060

 Endpoint:  168/168                                              Unavailable   0 of inf
     InAuth:  168/168
        Aor:  168                                                1
  Transport:  tcp_transport             tcp      3     96  0.0.0.0:5060
Objects found: 2

[Sep  1 08:23:42] NOTICE[2965]: res_pjsip_session.c:4022 new_invite:  167: Call (TCP:192.168.6.102:57232) to extension '168' rejected because extension not found in context 'internal'.
    -- Executing [167@internal:1] Dial("PJSIP/168-0000000a", "PJSIP/167") in new stack
    -- Called PJSIP/167
    -- PJSIP/167-0000000b is ringing
  == Spawn extension (internal, 167, 1) exited non-zero on 'PJSIP/168-0000000a