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Code Block
swamidas@swamidas-HP-Laptop-14q-cs0xxx:/etc/asterisk$ cat extensions.conf
[general]
static=yes
writeprotect=no
clearglobalvars=no

[internal]
exten => 1001,1,Dial(SIP/1001)
exten => 1002,1,Dial(SIP/1002)

[default]
exten => _X.,1,NoOp(Unhandled call to ${EXTEN})
exten => _X.,n,Playback(vm-nobodyavail)
exten => _X.,n,Hangup()

exten => 1001,1,Dial(SIP/1001,20)
exten => 1001,n,NoOp(Dial status for 1001: ${DIALSTATUS})
exten => 1001,n,GotoIf($["${DIALSTATUS}" = "BUSY"]?busy:unavail)
exten => 1001,n(busy),Playback(all-circuits-busy-now)
exten => 1001,n(busy),Hangup()
exten => 1001,n(unavail),Playback(vm-nobodyavail)
exten => 1001,n(unavail),Hangup()

exten => 1002,1,Dial(SIP/1002,20)
exten => 1002,n,NoOp(Dial status for 1002: ${DIALSTATUS})
exten => 1002,n,GotoIf($["${DIALSTATUS}" = "BUSY"]?busy:unavail)
exten => 1002,n(busy),Playback(all-circuits-busy-now)
exten => 1002,n(busy),Hangup()
exten => 1002,n(unavail),Playback(vm-nobodyavail)
exten => 1002,n(unavail),Hangup()

exten => 500,1,Echo()
exten => 500,n,Hangup()
Code Block
swamidas-HP-Laptop-14q-cs0xxx*CLI> sip reload
 Reloading SIP
swamidas-HP-Laptop-14q-cs0xxx*CLI> dialplan reload
Dialplan reloaded.

4) Make sure the ports are being allowed in the asterisk server to listen to the traffic from the clients. Allow ports using below commands,

   Ex: sudo ufw allow 5060/udp

         sudo ufw allow 10000:20000/udp

5) Register the sip clients with the asterisk server ip, username and password as configured in the sip.conf file.

6) After successful registration in both the clients, initiate a call between two clients and verify the logs in the asterisk CLI.

7) Voice can be audible clearly between two clients.

8) Below is the configuration files added for the asterisk server.

...


[Jun 27 12:59:48] WARNING[27757]: pbx.c:7126 add_priority: Extension '1001' priority 5 in 'default', label 'busy' already in use at priority 4
[Jun 27 12:59:48] WARNING[27757]: pbx.c:7126 add_priority: Extension '1001' priority 7 in 'default', label 'unavail' already in use at priority 6
[Jun 27 12:59:48] WARNING[27757]: pbx.c:7126 add_priority: Extension '1002' priority 5 in 'default', label 'busy' already in use at priority 4
[Jun 27 12:59:48] WARNING[27757]: pbx.c:7126 add_priority: Extension '1002' priority 7 in 'default', label 'unavail' already in use at priority 6
    -- Including switch 'DUNDi/e164' in context 'ael-dundi-e164-switch'

4) Make sure the ports are being allowed in the asterisk server to listen to the traffic from the clients. Allow ports using below commands,

   Ex: sudo ufw allow 5060/udp

         sudo ufw allow 10000:20000/udp

5) Register the sip clients with the asterisk server ip, username and password as configured in the sip.conf file.

Code Block
swamidas-HP-Laptop-14q-cs0xxx*CLI> sip show peers
Name/username             Host                                    Dyn Forcerport Comedia    ACL Port     Status      Description                      
1001/1001                 (Unspecified)                            D  Yes        Yes            0        UNKNOWN                                      
1002/1002                 (Unspecified)                            D  Yes        Yes            0        UNKNOWN                                      
2 sip peers [Monitored: 0 online, 2 offline Unmonitored: 0 online, 0 offline]

6) After successful registration in both the clients, initiate a call between two clients and verify the logs in the asterisk CLI.

Code Block
swamidas-HP-Laptop-14q-cs0xxx*

...

CLI> sip show peers
Name/username             Host                                    Dyn Forcerport Comedia    ACL Port     Status      Description                      
1001/1001                 (Unspecified)                            D  Yes        Yes            0        UNKNOWN                                      
1002/1002                 (Unspecified)                            D  Yes        Yes            0        UNKNOWN                                      
2 sip peers [Monitored: 0 online, 2 offline Unmonitored: 0 online, 0 offline]
    -- Registered SIP '1001' at 192.168.1.16:39563
[Jun 27 11:50:07] NOTICE[23025]: chan_sip.c:25009 handle_response_peerpoke: Peer '1001' is now Reachable. (337ms / 2000ms)
swamidas-HP-Laptop-14q-cs0xxx*CLI> 
swamidas-HP-Laptop-14q-cs0xxx*CLI> 
    -- Registered SIP '1002' at 192.168.1.4:43325
[Jun 27 12:21:54] NOTICE[23025]: chan_sip.c:25009 handle_response_peerpoke: Peer '1002' is now Reachable. (100ms / 2000ms)
swamidas-HP-Laptop-14q-cs0xxx*CLI>
Code Block
== Using SIP CoS mark 4
  == Using SIP RTP CoS mark 5
    -- Executing [1001@internal:1] Dial("SIP/1002-00000000", "SIP/1001") in new stack
  == Using SIP RTP CoS mark 5
    -- Called SIP/1001
    -- SIP/1001-00000001 is ringing
    -- SIP/1001-00000001 is ringing
    -- SIP/1001-00000001 answered SIP/1002-00000000
    -- Channel SIP/1001-00000001 joined 'simple_bridge' basic-bridge <4f256478-6734-4430-99cc-70dea5a8c97e>
    -- Channel SIP/1002-00000000 joined 'simple_bridge' basic-bridge <4f256478-6734-4430-99cc-70dea5a8c97e>
[Jun 27 13:01:23] WARNING[23025]: chan_sip.c:4151 retrans_pkt: Retransmission timeout reached on transmission SBLw7uYy-wTk5rEGVuN4lQ.. for seqno 2 (Critical Response) -- See https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions
Packet timed out after 16446ms with no response
[Jun 27 13:01:23] WARNING[23025]: chan_sip.c:4175 retrans_pkt: Hanging up call SBLw7uYy-wTk5rEGVuN4lQ.. - no reply to our critical packet (see https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions).
    -- Channel SIP/1002-00000000 left 'native_rtp' basic-bridge <4f256478-6734-4430-99cc-70dea5a8c97e>
    -- Channel SIP/1001-00000001 left 'native_rtp' basic-bridge <4f256478-6734-4430-99cc-70dea5a8c97e>
  == Spawn extension (internal, 1001, 1) exited non-zero on 'SIP/1002-00000000'
  == Using SIP RTP CoS mark 5
    -- Executing [1002@internal:1] Dial("SIP/1001-00000002", "SIP/1002") in new stack
  == Using SIP RTP CoS mark 5
    -- Called SIP/1002
    -- SIP/1002-00000003 is ringing
    -- SIP/1002-00000003 answered SIP/1001-00000002
    -- Channel SIP/1002-00000003 joined 'simple_bridge' basic-bridge <2998d0cc-a467-4838-bc36-c5e71cc78b8e>
    -- Channel SIP/1001-00000002 joined 'simple_bridge' basic-bridge <2998d0cc-a467-4838-bc36-c5e71cc78b8e>
[Jun 27 13:02:28] WARNING[23025]: chan_sip.c:4151 retrans_pkt: Retransmission timeout reached on transmission lw6Ulds1px-COhEIX7VAbA.. for seqno 2 (Critical Response) -- See https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions

...


Packet timed out after

...

 6400ms with no response

...


[Jun 27 13:

...

02:

...

28] WARNING[23025]: chan_sip.c:4175 retrans_pkt: Hanging up call

...

 lw6Ulds1px-

...

COhEIX7VAbA.. - no reply to our critical packet (see https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions).

...


    -- Channel SIP/

...

1001-

...

00000002 left 'native_rtp' basic-bridge

...

 <2998d0cc-

...

a467-

...

4838-

...

bc36-

...

c5e71cc78b8e>
    -- Channel SIP/

...

1002-

...

00000003 left 'native_rtp' basic-bridge

...

 <2998d0cc-

...

a467-

...

4838-

...

bc36-

...

c5e71cc78b8e>
  == Spawn extension (internal,

...

 1002, 1) exited non-zero on 'SIP/

...

1001-

...

00000002'
[Jun 27 13:05:31] NOTICE[23025]: chan_sip.c:25009 handle_response_peerpoke: Peer '1002' is now Lagged. (3389ms / 2000ms)
[Jun 27 13:05:31] NOTICE[23025]: chan_sip.c:25009 handle_response_peerpoke: Peer '1002' is now Reachable. (204ms / 2000ms)
[Jun 27 13:06:35] NOTICE[23025]: chan_sip.c:30551 sip_poke_noanswer: Peer '1002' is now UNREACHABLE!  Last qualify: 204
swamidas-HP-Laptop-14q-cs0xxx*CLI>

7) Voice can be audible clearly between two clients.


Asterisk Server setup in Banana PI R4

1) Added below changes for porting asterisk code for banana pi r4 board.

Code Block
https://github.com/rdkcentral/meta-cmf-bananapi/commit/eec660282dbeec132b90e3172f72f09ec951e2d7

2) Enable asterisk in board using systemctl

Code Block
systemctl enable asterisk

3) Add configuration for two sip clients in the banana pi r4 board.

Code Block
root@Filogic-GW:/etc/asterisk# cat pjsip.conf
[udp-transport]
type=transport
protocol=udp
bind=0.0.0.0
external_media_address=192.168.1.12
external_signaling_address=192.168.1.12

[1001]
type=endpoint
transport=udp-transport
context=from-internal
disallow=all
allow=alaw
allow=ulaw
auth=1001
aors=1001
direct_media=no

[1001]
type=auth
auth_type=userpass
password=1001
username=1001

[1001]
type=aor
max_contacts=10

[1002]
type=endpoint
transport=udp-transport
context=from-internal
disallow=all
allow=alaw
allow=ulaw
auth=1002
aors=1002
direct_media=no

[1002]
type=auth
auth_type=userpass
password=1002
username=1002

[1002]
type=aor
max_contacts=10

4) Add dialplan for the two clients in the board

Code Block
root@Filogic-GW:/etc/asterisk# cat extensions.conf
[general]
static=yes
writeprotect=no
clearglobalvars=no

[from-internal]
exten => 1001,1,Dial(PJSIP/1001,20)
exten => 1002,1,Dial(PJSIP/1002,20)

5) Run the asterisk server in the board and reload both the configuration files in the asterisk CLI

Code Block
root@Filogic-GW:/etc/asterisk# asterisk -rvvv
Asterisk 18.15.1, 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 18.15.1 currently running on Filogic-GW (pid = 4177657)
Filogic-GW*CLI>
Filogic-GW*CLI> module reload res_pjsip.so
Module 'res_pjsip.so' reloaded successfully.
    -- Reloading module 'res_pjsip.so' (Basic SIP resource)
Filogic-GW*CLI> dialplan reload
Dialplan reloaded.
[Apr 28 17:43:14] WARNING[3460]: pbx.c:7126 add_priority: Extension '1001' priority 7 in 'default', label 'unavail' already in use at priority 6
[Apr 28 17:43:14] WARNING[3460]: pbx.c:7126 add_priority: Extension '1002' priority 5 in 'default', label 'busy' already in use at priority 4
[Apr 28 17:43:14] WARNING[3460]: pbx.c:7126 add_priority: Extension '1002' priority 7 in 'default', label 'unavail' already in use at priority 6
    -- Time to scan old dialplan and merge leftovers back into the new: 0.000048 sec
    -- Time to restore hints and swap in new dialplan: 0.000012 sec
    -- Time to delete the old dialplan: 0.000034 sec
    -- Total time merge_contexts_delete: 0.000094 sec
    -- pbx_config successfully loaded 6 contexts (enable debug for details).
Filogic-GW*CLI>

6) If we are facing any database errors, please follow below steps

Code Block
systemctl stop asteriskcd /var/lib/asteriskmv astdb.sqlite3 /tmp/astdb.sqlite3.corruptedcorrect dialplan configuration
Restart asterisk and Re-register endpoints
systemctl start asterisk

7) Verify the clients are successfully registered with the asterisk server

Code Block
Filogic-GW*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:  1001                                                 Not in use    0 of inf
     InAuth:  1001/1001
        Aor:  1001                                              10
      Contact:  1001/sip:1001@192.168.1.2:42418;transport= f6b203c8e8 NonQual         nan
  Transport:  udp-transport             udp      0      0  0.0.0.0:5060

 Endpoint:  1002                                                 Not in use    0 of inf
     InAuth:  1002/1002
        Aor:  1002                                              10
      Contact:  1002/sip:1002@192.168.1.5:48383;transport= 0d95a96184 NonQual         nan
  Transport:  udp-transport             udp      0      0  0.0.0.0:5060


Objects found: 2

Filogic-GW*CLI>

8) Make sure that both clients and Banana PI R4 board are in the same network.

9) Add firewall rules to allow sip and rtp ports to make communication between two clients using asterisk server. Add rules on the top place of the chain

Code Block
root@Filogic-GW:~# iptables -I INPUT -p udp --dport 5060 -j ACCEPT
root@Filogic-GW:~# iptables -I INPUT -p udp --dport 10000:20000 -j ACCEPT
root@Filogic-GW:~# iptables -nL
Chain INPUT (policy DROP)
target     prot opt source               destination
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpt:5060
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpts:10000:20000

10) For any debug regarding the logs please set pjsip logger to on.

Code Block
pjsip set logger on

11) Now initiate a call in between two clients and verify the logs in asterisk CLI. Voice call will be generated and two way communication in between two clients can be happened successfully.

Code Block
-- Executing [1002@from-internal:1] Dial("PJSIP/1001-00000000", "PJSIP/1002,20") in new stack
    -- Called PJSIP/1002
    -- Removed contact 'sip:1001@192.168.1.4:45167;transport=UDP;rinstance=34df73ee3b3522b6' from AOR '1001' due to expiration
  == Contact 1001/sip:1001@192.168.1.4:45167;transport=UDP;rinstance=34df73ee3b3522b6 has been deleted
    -- PJSIP/1002-00000001 is ringing
    -- PJSIP/1002-00000001 answered PJSIP/1001-00000000
    -- Channel PJSIP/1002-00000001 joined 'simple_bridge' basic-bridge <d8b6ecbe-8d28-4684-84d6-ec19d2a31361>
    -- Channel PJSIP/1001-00000000 joined 'simple_bridge' basic-bridge <d8b6ecbe-8d28-4684-84d6-ec19d2a31361>
    -- Channel PJSIP/1001-00000000 left 'native_rtp' basic-bridge <d8b6ecbe-8d28-4684-84d6-ec19d2a31361>
  == Spawn extension (from-internal, 1002, 1) exited non-zero on 'PJSIP/1001-00000000'
    -- Channel PJSIP/1002-00000001 left 'native_rtp' basic-bridge <d8b6ecbe-8d28-4684-84d6-ec19d2a31361>
Filogic-GW*CLI> [185515.936263] mt7996e 0000:01:00.0: mt7996_hw_scan: trigger scan on mt76 band 0
[185516.136513] mt7996e 0000:01:00.0: mt7996_hw_scan: trigger scan on mt76 band 1
[185516.336706] mt7996e 0000:01:00.0: mt7996_hw_scan: trigger scan on mt76 band 2
    -- Executing [1001@from-internal:1] Dial("PJSIP/1002-00000002", "PJSIP/1001,20") in new stack
    -- Called PJSIP/1001
    -- PJSIP/1001-00000003 is ringing
    -- PJSIP/1001-00000003 answered PJSIP/1002-00000002
    -- Channel PJSIP/1001-00000003 joined 'simple_bridge' basic-bridge <c0d89774-dbea-4c65-a1e2-ecbe5d8e567e>
    -- Channel PJSIP/1002-00000002 joined 'simple_bridge' basic-bridge <c0d89774-dbea-4c65-a1e2-ecbe5d8e567e>
    -- Channel PJSIP/1002-00000002 left 'native_rtp' basic-bridge <c0d89774-dbea-4c65-a1e2-ecbe5d8e567e>
    -- Channel PJSIP/1001-00000003 left 'native_rtp' basic-bridge <c0d89774-dbea-4c65-a1e2-ecbe5d8e567e>
  == Spawn extension (from-internal, 1001, 1) exited non-zero on 'PJSIP/1002-00000002'


Registering Asterisk as client with external SIP server and making call using external sip server trunk

1) Register with the external sip server by creating an account in sip.linphone.org and add both username, password in the existing pjsip.conf which are used as authentication credentials.

Code Block
[linphone_freesip_auth]
type=auth
auth_type=userpass
password=password
username=2931

2) Make the outbound SIP registration by adding in the pjsip.conf file

Code Block
[linphone_freesip_registration]
type=registration
transport=udp-transport
server_uri=sip:sip.linphone.org
client_uri=sip:2931@sip.linphone.org
outbound_auth=linphone_freesip_auth
retry_interval=60
expiration=3600

3) Add the contact information of the remote SIP server for outbound trunk in pjsip.conf file

Code Block
[linphone_freesip_aor]
type=aor
contact=sip:sip.linphone.org:5060
max_contacts=1
qualify_frequency=30

4) Define the SIP endpoint for your connection to the Linphone freesip server in pjsip.conf file

Code Block
[linphone_freesip_trunk]
type=endpoint
transport=udp-transport
context=from-linphone
disallow=all
allow=ulaw
allow=alaw
allow=gsm
auth=linphone_freesip_auth
outbound_auth=linphone_freesip_auth
aors=linphone_freesip_aor
direct_media=no
force_rport=yes
rewrite_contact=yes
rtp_symmetric=yes

5) Do nslookup for the sip.linphone.org from the board and add the IP in the identify section in the pjsip.conf file.

Code Block
root@Filogic-GW:/etc/asterisk# nslookup sip.linphone.org
Server:    192.168.1.1
Address 1: 192.168.1.1 _gateway

Name:      sip.linphone.org
Address 1: 5.135.215.43 sip12.linphone.org
Address 2: 2001:41d0:203:7fe2::4


[linphone_identify]
type=identify
endpoint=linphone_freesip_trunk
match=5.135.215.43/32

6) Add dialplan configuration in extensions.conf to route outgoing calls through this PJSIP trunk. Assuming users to dial '9' followed by the number to call externally.

Code Block
[from-external]
exten => 2931,1,Dial(PJSIP/1001&PJSIP/1002)

[from-internal]
exten => 1001,1,Dial(PJSIP/1001)
exten => 1002,1,Dial(PJSIP/1002)
exten => _X.,1,Dial(PJSIP/${EXTEN}@linphone_freesip_trunk)

7) After updating the configurations, reload both the configurations from asterisk CLI.

Code Block
Filogic-GW*CLI> module reload res_pjsip.so
Module 'res_pjsip.so' reloaded successfully.
    -- Reloading module 'res_pjsip.so' (Basic SIP resource)
Filogic-GW*CLI> dialplan reload
Dialplan reloaded.
[Jul 17 12:20:40] WARNING[1027809]: pbx.c:7126 add_priority: Extension '1001' priority 7 in 'default', label 'unavail' already in use at priority 6
[Jul 17 12:20:40] WARNING[1027809]: pbx.c:7126 add_priority: Extension '1002' priority 5 in 'default', label 'busy' already in use at priority 4
[Jul 17 12:20:40] WARNING[1027809]: pbx.c:7126 add_priority: Extension '1002' priority 7 in 'default', label 'unavail' already in use at priority 6
    -- Time to scan old dialplan and merge leftovers back into the new: 0.000062 sec
    -- Time to restore hints and swap in new dialplan: 0.000018 sec
    -- Time to delete the old dialplan: 0.000046 sec
    -- Total time merge_contexts_delete: 0.000126 sec
    -- pbx_config successfully loaded 6 contexts (enable debug for details).

8) Verify that the endpoints are registered successfully or not.

Code Block
Filogic-GW*CLI> pjsip show registrations

 <Registration/ServerURI..............................>  <Auth....................>  <Status.......>
==========================================================================================

 linphone_freesip_registration/sip:sip.linphone.org      linphone_freesip_auth       Registered        (exp. 68882s ago)

Objects found: 1

Filogic-GW*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:  1001                                                 Not in use    0 of inf
     InAuth:  1001/1001
        Aor:  1001                                              10
  Transport:  udp-transport             udp      0      0  0.0.0.0:5060

 Endpoint:  1002                                                 Unavailable   0 of inf
     InAuth:  1002/1002
        Aor:  1002                                              10
  Transport:  udp-transport             udp      0      0  0.0.0.0:5060

 Endpoint:  linphone_freesip_trunk                               Not in use    0 of inf
    OutAuth:  linphone_freesip_auth/2931
     InAuth:  linphone_freesip_auth/2931
        Aor:  linphone_freesip_aor                               1
      Contact:  linphone_freesip_aor/sip:sip.linphone.org: 8248a8908d Avail       187.774
  Transport:  udp-transport             udp      0      0  0.0.0.0:5060
   Identify:  linphone_identify/linphone_freesip_trunk
        Match: 5.135.215.43/32


Objects found: 3

Filogic-GW*CLI>

9) Add firewall rules to allow sip and rtp ports.

Code Block
root@Filogic-GW:~# iptables -I INPUT -p udp --dport 5060 -j ACCEPT
root@Filogic-GW:~# iptables -I INPUT -p udp --dport 10000:20000 -j ACCEPT
root@Filogic-GW:~# iptables -nL
Chain INPUT (policy DROP)
target     prot opt source               destination
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpt:5060
ACCEPT     udp  --  0.0.0.0/0            0.0.0.0/0            udp dpts:10000:20000

10) Now initiate an outbound call from internal extension to the external sip server(2931).

Code Block
-- Executing [92931@from-internal:1] NoOp("PJSIP/1001-00000001", "") in new stack
    -- Executing [92931@from-internal:2] Dial("PJSIP/1001-00000001", "PJSIP/2931@linphone_freesip_trunk,60") in new stack
    -- Called PJSIP/2931@linphone_freesip_trunk
    -- PJSIP/linphone_freesip_trunk-00000002 is ringing
    -- Added contact 'sip:1001@192.168.1.9:36312;transport=UDP;rinstance=faa99161e70850c2' to AOR '1001' with expiration of 60 seconds
[Jul 16 11:20:45] WARNING[1830]: db.c:316 db_execute_sql: Error executing SQL (COMMIT): database is locked
       > 0x7f940598d0 -- Strict RTP learning after remote address set to: 5.135.215.43:18034
    -- PJSIP/linphone_freesip_trunk-00000002 answered PJSIP/1001-00000001
       > 0x7f94049790 -- Strict RTP learning after remote address set to: 192.168.1.9:36687
    -- Channel PJSIP/linphone_freesip_trunk-00000002 joined 'simple_bridge' basic-bridge <97c41ec6-e3f4-45e8-ad94-f2f8763abff7>
    -- Channel PJSIP/1001-00000001 joined 'simple_bridge' basic-bridge <97c41ec6-e3f4-45e8-ad94-f2f8763abff7>
    -- Channel PJSIP/linphone_freesip_trunk-00000002 left 'simple_bridge' basic-bridge <97c41ec6-e3f4-45e8-ad94-f2f8763abff7>
    -- Channel PJSIP/1001-00000001 left 'simple_bridge' basic-bridge <97c41ec6-e3f4-45e8-ad94-f2f8763abff7>
  == Spawn extension (from-internal, 92931, 2) exited non-zero on 'PJSIP/1001-00000001'
    -- Added contact 'sip:1001@192.168.1.9:36312;transport=UDP;rinstance=faa99161e70850c2' to AOR '1001' with expiration of 60 seconds 

SIP registration commands after adding the code changes:

1) By default inbound call configuration will be updated in the device.

2) Please take two clients install an application which supports voice calls and register those clients with the configuration in the "/etc/asterisk" folder.

    As per current configuration,

    Client1:

    Host: <erouter IP>

    Username: 601

    Password: 601

    Client2:

    Host: <erouter IP>

    Usename: 602

    Password: 602

3) Please set below commands from the console to update the outbound configuration. 

      dmcli eRT setv Device.Services.VoiceService.1.VoiceProfile.1.Line.1.Enable string Enabled

      dmcli eRT setv Device.Services.VoiceService.1.VoiceProfile.1.SIP.OutboundProxy string sip.linphone.org

      dmcli eRT setv Device.Services.VoiceService.1.VoiceProfile.1.SIP.OutboundProxyPort uint 5060

      dmcli eRT setv Device.Services.VoiceService.1.VoiceProfile.1.Line.1.SIP.AuthUserName string <username>

      dmcli eRT setv Device.Services.VoiceService.1.VoiceProfile.1.Line.1.SIP.AuthPassword string <password>

      dmcli eRT getv Device.Services.VoiceService.1.VoiceProfile.1.Line.1.Status

4) Please take some other client and create an account in sip.linphone.org

5) Provide the username and password in the data models as per the data used for account creation using linphone.

6) Added below logs for the reference.

Code Block
root@Filogic-GW:~# asterisk -x "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:  2931_trunk                                           Not in use    0 of inf
    OutAuth:  2931_auth/2931
        Aor:  2931_aor                                           0
      Contact:  2931_aor/sip:sip.linphone.org              e53c3ca51a NonQual         nan
  Transport:  udp-transport             udp      0      0  0.0.0.0:5060
   Identify:  2931_identify/2931_trunk
        Match: 5.135.215.43/32
        Match: 2001:41d0:203:7fe2::4/128
        Match: 176.31.149.179/32
        Match: 2001:41d0:303:b0d2::4/128

 Endpoint:  601                                                  Not in use    0 of inf
     InAuth:  601/601
        Aor:  601                                               10
      Contact:  601/sip:601@192.168.1.2:38116;transport=UD ba3b650e9b NonQual         nan
  Transport:  udp-transport             udp      0      0  0.0.0.0:5060

 Endpoint:  602                                                  Not in use    0 of inf
     InAuth:  602/602
        Aor:  602                                               10
      Contact:  602/sip:602@192.168.1.5:57429;transport=UD 2936e37328 NonQual         nan
  Transport:  udp-transport             udp      0      0  0.0.0.0:5060


Objects found: 3

root@Filogic-GW:~#
root@Filogic-GW:~#
root@Filogic-GW:~# asterisk -x "pjsip show registrations"

 <Registration/ServerURI..............................>  <Auth....................>  <Status.......>
==========================================================================================

 2931_registration/sip:sip.linphone.org                  2931_auth                   Registered        (exp. 79s)

Objects found: 1

root@Filogic-GW:~#