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35 participants
37544 discussions

install latest sems-server on debian 10 buster
by Mojtaba 18 Aug '21

18 Aug '21

Hello there, Does anybody have experience installing the latest SEMS-Server (1.6.0) on debian 10 buster? I tried to install both 1.6.0. and 1.7-dev and some issues are occurred, but i installed the version 1.3.1 on debian 8 before. Any help would be appreciated. Thanks with best regards -- --Mojtaba Esfandiari.S

4 11

How to insert user=phone header INVITE TO FROM
by César Matheus 18 Aug '21

18 Aug '21

Hi list. mY provider asks me to insert user = phone in my header. because it requires to receive my INVITE with user = phone in TO and FROM However, I add the user = phone in my configuration like this: $ ru = "sip:" + $ rU + "@" + $ sel (cfg_get.pstn1.gw_ip) + ":" + $ sel (cfg_get.pstn1.gw_port) + "; user = phone"; but only the INVITE appears, not in the TO or FROM. INVITE sip: 09872323232(a)X.Y.X.K: 5060; user = phone SIP / 2.0 From: <sip: XXXXYYYYY(a)172.20.12.4: 5060>; tag = 15552444533876 To: <sip: 09872323232(a)172.20.12.2: 5060> You can help me solve it. Thanks. -- César Matheus

3 2

crash in timer
by Juha Heinanen 17 Aug '21

17 Aug '21

Any idea what could cause the crash shown in the bt below? This is with Kamailio 5.5. -- Juha [New LWP 12061] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". bt Core was generated by `/usr/bin/sip-proxy -f /etc/sip-proxy/sip-proxy.cfg -P /run/sip-proxy/sip-proxy.'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x0000563d3b390c5d in timer_list_expire (t=1584008014, h=0x7f7a1e76bb40, slow_l=0x7f7a1e76d680, slow_mark=63909) at core/timer.c:846 846 core/timer.c: No such file or directory. (gdb) bt full #0 0x0000563d3b390c5d in timer_list_expire (t=1584008014, h=0x7f7a1e76bb40, slow_l=0x7f7a1e76d680, slow_mark=63909) at core/timer.c:846 tl = 0x7f7a226ecbd8 ret = 0 #1 0x0000563d3b391219 in timer_handler () at core/timer.c:922 saved_ticks = 1584008014 run_slow_timer = 0 i = 421 __func__ = "timer_handler" #2 0x0000563d3b391742 in timer_main () at core/timer.c:961 No locals. #3 0x0000563d3b2c94de in main_loop () at main.c:1839 i = 8 pid = 0 si = 0x0 si_desc = "udp receiver child=7 sock=46.182.160.20:5060\000\000\000\000\003\000\000\000 \000\000\000\000\071CU\356xL\375\000\000\000\000\000\000\000\000\210\300m;=V\000\000\000\000\000\000\000\000\000\000\260\334\371Jz\177\000\000\263\331r;=V\000\000\000\000\000 \000\000\000\000\340\b3;\374\177\000\000\t\365U;=V\000" nrprocs = 8 woneinit = 1 __func__ = "main_loop" #4 0x0000563d3b2d44aa in main (argc=17, argv=0x7ffc3b330e28) at main.c:3053 cfg_stream = 0x563d3b9ea290 c = -1 r = 0 tmp = 0x7ffc3b331f3f "" tmp_len = 1260628273 port = 32634 proto = 0 ahost = 0x0 aport = 0 --Type <RET> for more, q to quit, c to continue without paging--c options = 0x563d3b6dece0 ":f:cm:M:dVIhEeb:l:L:n:vKrRDTN:W:w:t:u:g:P:G:SQ:O:a:A:x:X:Y:" ret = -1 seed = 1970794883 rfd = 4 debug_save = 0 debug_flag = 0 dont_fork_cnt = 0 n_lst = 0x0 p = 0xffff00001f80 <error: Cannot access memory at address 0xffff00001f80> st = {st_dev = 21, st_ino = 21649, st_nlink = 2, st_mode = 16832, st_uid = 109, st_gid = 115, __pad0 = 0, st_rdev = 0, st_size = 40, st_blksize = 4096, st_blocks = 0, st_atim = {tv_sec = 1620846563, tv_nsec = 71986646}, st_mtim = {tv_sec = 1628122861, tv_nsec = 116913769}, st_ctim = {tv_sec = 1628122861, tv_nsec = 616909103}, __glibc_reserved = {0, 0, 0}} tbuf = "\000\000\000\000\000\000\000\000\b\000\000\000\000\000\000\000\060\067&Kz\177\000\000\000\000\000\000\000\000\000\000\240\241>;\374\177\000\000\364:$Kz\177\000\000\b\000\000\000\000\000\000\000\230\242>;\374\177\000\000\060\067&Kz\177\000\000\310\v3;\374\177\000\000\304\v3;\374\177", '\000' <repeats 18 times>, "\230\242>;\374\177\000\000\250\241>;\374\177\000\000'\256\002Kz\177\000\000&\260be\000\000\000\000\060\r3;\374\177\000\000\300\212\225\001\000\000\000\000\220\f3;\374\177\000\000\200\f3;\374\177\000\000\310\v3;\374\177\000\000X7&Kz\177\000\000\001", '\000' <repeats 31 times>... option_index = 0 long_options = {{name = 0x563d3b6e0f3f "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x563d3b6dc4e1 "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x563d3b6e0f44 "alias", has_arg = 1, flag = 0x0, val = 1024}, {name = 0x563d3b6e0f4a "subst", has_arg = 1, flag = 0x0, val = 1025}, {name = 0x563d3b6e0f50 "substdef", has_arg = 1, flag = 0x0, val = 1026}, {name = 0x563d3b6e0f59 "substdefs", has_arg = 1, flag = 0x0, val = 1027}, {name = 0x563d3b6e0f63 "server-id", has_arg = 1, flag = 0x0, val = 1028}, {name = 0x563d3b6e0f6d "loadmodule", has_arg = 1, flag = 0x0, val = 1029}, {name = 0x563d3b6e0f78 "modparam", has_arg = 1, flag = 0x0, val = 1030}, {name = 0x563d3b6e0f81 "log-engine", has_arg = 1, flag = 0x0, val = 1031}, {name = 0x563d3b6e0f8c "debug", has_arg = 1, flag = 0x0, val = 1032}, {name = 0x563d3b6e0f92 "cfg-print", has_arg = 0, flag = 0x0, val = 1033}, {name = 0x563d3b6e0f9c "atexit", has_arg = 1, flag = 0x0, val = 1034}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}} __func__ = "main"

1 0

Info: First group of presentations at Kamailio World Online 2021
by Daniel-Constantin Mierla 17 Aug '21

17 Aug '21

Hello, the first group of presentations selected for the next Kamailio World Online, September 1-2, 2021, has been published, aiming to provide a good knowledge base of using Kamailio for different deployment types: segregation of networks with an SBC-like role, controlling robots, RTP streams management with RTPEngine, configuration variables or transformations, SIP attacks handling and asynchronous SIP routing. You can find more details at: * https://kamailioworld.com/k09-online/ The schedule will be completed during the next days, with another group of interesting sessions and open discussion panels. Cheers, Daniel -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda

1 0

No docker hub automated builds
by Sergey Safarov 14 Aug '21

14 Aug '21

I found that not more automated builds available on docker hub https://www.docker.com/blog/changes-to-docker-hub-autobuilds/ Looks like we need to make some changes for the alpine docker image. Maybe use github actions for this task? https://docs.docker.com/ci-cd/github-actions/ Sergey

1 0

RTPEngine: Async connection/communication between Kamailio and RTPEngine
by Mitesh Thakkar 12 Aug '21

12 Aug '21

Hi, Couple of week before I have posted feature request - https://github.com/kamailio/kamailio/issues/2807 As suggested, I am trying to figure out how I can achieve it with async or sworker modules. Can someone help me to understand how to use those modules to achieve async connectivity? Regards, Miteshkumar Thakkar

3 3

auth challenge freeswitch with Zopier
by Joli Martinez 10 Aug '21

10 Aug '21

Hello, I am using dsiprouter as a public facing server for pass through registrations to a fusion pbx box. This setup works great and has for a long time now. The issue I am having is that we are switching soft phone clients to copier. Zopier uses a push server. When an incoming call comes into the freeswitch server, it fires off an invite to the Zopier registered client. For some reason ONLY in this scenario Kamailio is doing an auth challenge to Freeswitch preventing to call to be sent to the soft phone. How can I stop this from happening? Other soft phones and hard phones work great with inbound calls except for Zopier. thanks,

2 1

Integration with multiple MS Teams instances
by Володимир Іванець 10 Aug '21

10 Aug '21

Hello all! I was able to connect Kamailio with MS Teams and now trying to add one more Teams instance. It looks like I have some misconfiguration or there is a bug. My test server has 2 domain records pointing at it (kamailio.domain1.com and kamailio.domain2.com). My tls.cfg configuration file looks like this. As you can see the Default section is configured with a kamailio.domain1.com sertificate: *[server:default]* *method = TLSv1.0+* *require_certificate = no* *verify_certificate = no* *private_key = /var/kamailio/certificates/kamailio.domain1.com/server/key.pem <http://kamailio.domain1.com/server/key.pem>* *certificate = /var/kamailio/certificates/kamailio.domain1.com/server/cert.pem <http://kamailio.domain1.com/server/cert.pem>* *ca_list = /var/kamailio/certificates/kamailio.domain1.com/CA/cert.pem <http://kamailio.domain1.com/CA/cert.pem>* *[client:default]* *method = TLSv1.0+* *require_certificate = no* *verify_certificate = no* *private_key = /var/kamailio/certificates/kamailio.domain1.com/server/key.pem <http://kamailio.domain1.com/server/key.pem>* *certificate = /var/kamailio/certificates/kamailio.domain1.com/server/cert.pem <http://kamailio.domain1.com/server/cert.pem>* *ca_list = /var/kamailio/certificates/kamailio.domain1.com/CA/cert.pem <http://kamailio.domain1.com/CA/cert.pem>* *[server:172.16.30.206:5062 <http://172.16.30.206:5062>]* *method = TLSv1.0+* *require_certificate = no* *verify_certificate = no* *private_key = /var/kamailio/certificates/kamailio.domain1.com/server/key.pem <http://kamailio.domain1.com/server/key.pem>* *certificate = /var/kamailio/certificates/kamailio.domain1.com/server/cert.pem <http://kamailio.domain1.com/server/cert.pem>* *ca_list = /var/kamailio/certificates/kamailio.domain1.com/CA/cert.pem <http://kamailio.domain1.com/CA/cert.pem>* *server_name = "kamailio.domain1.com <http://kamailio.domain1.com>"* *server_id = "**"kamailio.domain1.com <http://kamailio.domain1.com>"* *[client:172.16.30.206:5062 <http://172.16.30.206:5062>]* *method = TLSv1.0+* *require_certificate = no* *verify_certificate = no* *private_key = /var/kamailio/certificates/kamailio.domain1.com/server/key.pem <http://kamailio.domain1.com/server/key.pem>* *certificate = /var/kamailio/certificates/kamailio.domain1.com/server/cert.pem <http://kamailio.domain1.com/server/cert.pem>* *ca_list = /var/kamailio/certificates/kamailio.domain1.com/CA/cert.pem <http://kamailio.domain1.com/CA/cert.pem>* *[server:172.16.30.206:5063 <http://172.16.30.206:5063>]* *method = TLSv1.0+* *require_certificate = no* *verify_certificate = no* *private_key = /var/kamailio/certificates/kamailio.domain2.com/server/key.pem <http://kamailio.domain2.com/server/key.pem>* *certificate = /var/kamailio/certificates/kamailio.domain2.com/server/cert.pem <http://kamailio.domain2.com/server/cert.pem>* *ca_list = /var/kamailio/certificates/kamailio.domain2.com/CA/cert.pem <http://kamailio.domain2.com/CA/cert.pem>* *server_name = "kamailio.domain2.com <http://kamailio.domain2.com>"* *server_id = "**"kamailio.domain2.com <http://kamailio.domain2.com>"* *[client:172.16.30.206:5063 <http://172.16.30.206:5063>]* *method = TLSv1.0+* *require_certificate = no* *verify_certificate = no* *private_key = /var/kamailio/certificates/kamailio.domain2.com/server/key.pem <http://kamailio.domain2.com/server/key.pem>* *certificate = /var/kamailio/certificates/kamailio.domain2.com/server/cert.pem <http://kamailio.domain2.com/server/cert.pem>* *ca_list = /var/kamailio/certificates/kamailio.domain2.com/CA/cert.pem <http://kamailio.domain2.com/CA/cert.pem>* The dispatcher configuration table looks like this: +----+-------+----------------------------------------------+-------+----------+--------------------------------------------------------------------+-------------+ | id | setid | destination | flags | priority | attrs | description | +----+-------+----------------------------------------------+-------+----------+--------------------------------------------------------------------+-------------+ | 1 | 1 | sip:sip.pstnhub.microsoft.com;transport=tls | 0 | 3 | socket=tls:172.16.30.206:5062;ping_from=sip:kamailio.domain1.com | MS Teams 1 | | 2 | 2 | sip:sip.pstnhub.microsoft.com;transport=tls | 0 | 3 | socket=tls:172.16.30.206:5063;ping_from=sip:kamailio.domain2.com | MS Teams 2 | +----+-------+----------------------------------------------+-------+----------+--------------------------------------------------------------------+-------------+ When Kamailio is started only connection with the first trunk is established: *# kamcmd tls.list* *{* * id: 1* * timeout: 0* * src_ip: 52.114.75.24* * src_port: 5061* * dst_ip: 172.16.30.206* * dst_port: 0* * cipher: ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AESGCM(256) Mac=AEAD* * ct_wq_size: 0* * enc_rd_buf: 0* * flags: 2* * state: established* *}* *{* * id: 2* * timeout: 0* * src_ip: 52.114.75.24* * src_port: 7810* * dst_ip: 172.16.30.206* * dst_port: 5062* * cipher: AES256-GCM-SHA384 TLSv1.2 Kx=RSA Au=RSA Enc=AESGCM(256) Mac=AEAD* * ct_wq_size: 0* * enc_rd_buf: 0* * flags: 2* * state: established* *}* *{* * id: 3* * timeout: 596* * src_ip: 52.114.75.24* * src_port: 7811* * dst_ip: 172.16.30.206* * dst_port: 5062* * cipher: AES256-GCM-SHA384 TLSv1.2 Kx=RSA Au=RSA Enc=AESGCM(256) Mac=AEAD* * ct_wq_size: 0* * enc_rd_buf: 0* * flags: 2* * state: established* *}* Here is what I can see in Kamailio log file when it sends an OPTIONS request to the second trunk. Kamailio uses Default tls configuration and MS Teams don't accept it: *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: ALERT: <script>: == TRACE. tm:local-request. fs is tls:172.16.30.206:5063 <http://172.16.30.206:5063>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: tm [uac.c:352]: t_run_local_req(): apply new updates without Via to sip msg* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/msg_translator.c:1796]: check_boundaries(): no multi-part body* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:610]: parse_msg(): SIP Request:* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:612]: parse_msg(): method: <OPTIONS>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:614]: parse_msg(): uri: <sip:sip.pstnhub.microsoft.com <http://sip.pstnhub.microsoft.com>;transport=tls>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:616]: parse_msg(): version: <SIP/2.0>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/parse_via.c:1303]: parse_via_param(): Found param type 232, <branch> = <z9hG4bK169b.6411b4c3000000000000000000000000.0>; state=16* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/parse_via.c:2639]: parse_via(): end of header reached, state=5* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:498]: parse_headers(): Via found, flags=2* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:500]: parse_headers(): this is the first via* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/parse_addr_spec.c:864]: parse_addr_spec(): end of header reached, state=10* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:171]: get_hdr_field(): <To> [47]; uri=[sip:sip.pstnhub.microsoft.com <http://sip.pstnhub.microsoft.com>;transport=tls]* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:174]: get_hdr_field(): to body (47)[<sip:sip.pstnhub.microsoft.com <http://sip.pstnhub.microsoft.com>;transport=tls>^M* *], to tag (0)[]* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:152]: get_hdr_field(): cseq <CSeq>: <10> <OPTIONS>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:185]: get_hdr_field(): content_length=0* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:89]: get_hdr_field(): found end of header* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:610]: parse_msg(): SIP Request:* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:612]: parse_msg(): method: <OPTIONS>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:614]: parse_msg(): uri: <sip:sip.pstnhub.microsoft.com <http://sip.pstnhub.microsoft.com>;transport=tls>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:616]: parse_msg(): version: <SIP/2.0>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/parse_via.c:1303]: parse_via_param(): Found param type 232, <branch> = <z9hG4bK169b.6411b4c3000000000000000000000000.0>; state=16* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/parse_via.c:2639]: parse_via(): end of header reached, state=5* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:498]: parse_headers(): Via found, flags=2* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:500]: parse_headers(): this is the first via* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/parse_addr_spec.c:864]: parse_addr_spec(): end of header reached, state=10* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:171]: get_hdr_field(): <To> [47]; uri=[sip:sip.pstnhub.microsoft.com <http://sip.pstnhub.microsoft.com>;transport=tls]* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:174]: get_hdr_field(): to body (47)[<sip:sip.pstnhub.microsoft.com <http://sip.pstnhub.microsoft.com>;transport=tls>^M* *], to tag (0)[]* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/parser/msg_parser.c:152]: get_hdr_field(): cseq <CSeq>: <10> <OPTIONS>* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: tm [uac.c:189]: uac_refresh_hdr_shortcuts(): cseq: [CSeq: 10]* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/tcp_main.c:1993]: tcp_send(): no open tcp connection found, opening new one* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/ip_addr.c:229]: print_ip(): tcpconn_new: new tcp connection: 52.114.75.24* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/tcp_main.c:1175]: tcpconn_new(): on port 5061, type 3, socket -1* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: <core> [core/tcp_main.c:1498]: tcpconn_add(): hashes: 2831:67:0, 1* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: tls [tls_server.c:199]: tls_complete_init(): completing tls connection initialization* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: tls [tls_server.c:162]: tls_get_connect_server_name(): xavp with outbound server name not found* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: tls [tls_server.c:142]: tls_get_connect_server_id(): xavp with outbound server id not found* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: tls [tls_server.c:228]: tls_complete_init(): Using initial TLS domain TLSc<default> (dom 0x7f35509da688 ctx 0x7f3550b7a568 sn [])* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: tls [tls_domain.c:1177]: tls_lookup_private_key(): Private key lookup for SSL_CTX-0x7f3550b7a568: (nil)* *Jul 29 16:46:14 kamailio /usr/sbin/kamailio[11809]: DEBUG: tls [tls_domain.c:747]: sr_ssl_ctx_info_callback(): SSL handshake started* *...* If I change the Default configuration to use kamailio.domain2.com certificate, the second trunk will connect but the first one will fail. I tried to set "$xavp(tls=>server_name)" and "$xavp(tls[0]=>server_id)" variables to the event_route[tm:local-request] section but log still stated that server Name and ID were not found. Can someone please point me in the right direction, how can I make Kamailio use the correct certificates when establishing multiple TLS connections? Thanks a lot! Regards, Volodymyr Ivanets

3 12

Ringing Timeout
by Edward Romanenco 09 Aug '21

09 Aug '21

Hey all, I'm trying to find the best way for settings a timeout for the 'ringing' stage of a call - meaning - I would like to wait for 20 seconds between receiving status 180 / 183 / early media from the remote end and 200, if I fail to receive the expected response in this timeframe - call should be dropped. Most of the documented timeouts I saw count between the first invite to any of the aforementioned stages - but I'm actually looking for the opposite. Edward

2 1

help
by Said Hassani 08 Aug '21

08 Aug '21

Dear Team, I would like to know how to link Kamailio with openIMSCore?I would like to use Kamailio as an Application server.Please guide me or if there is someone who has worked on this subject, I would like to benefit from his help.

3 4

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