GOautodial Open Source Omni-channel Contact Center Suite

Hi guys, and thanks for your support. I have this issue (pasting logs)

[Feb 7 23:06:07] -- Registered SIP '8001' at 178.148.5.103:48090
[Feb 7 23:06:18] Manager 'sendcron' logged on from 127.0.0.1
[Feb 7 23:06:18] Using SIP RTP CoS mark 5
[Feb 7 23:06:28] NOTICE¹¹⁹³⁶: res_rtp_asterisk.c:2361 ast_rtp_read: Unknown RTP codec 95 received from '178.148.5.103:8000'
[Feb 7 23:06:28] > Channel SIP/8001-00000001 was answered.
[Feb 7 23:06:28] Manager 'sendcron' logged off from 127.0.0.1
[Feb 7 23:06:28] -- Executing [8600051@default:1] MeetMe("SIP/8001-00000001", "8600051,F") in new stack
[Feb 7 23:06:28] Parsing '/etc/asterisk/meetme.conf': [Feb 7 23:06:28] Found
[Feb 7 23:06:28] Parsing '/etc/asterisk/meetme-vicidial.conf': [Feb 7 23:06:28] Found
[Feb 7 23:06:28] WARNING[11972]: app_meetme.c:1248 build_conf: Unable to open DAHDI pseudo device
[Feb 7 23:06:28] Spawn extension (default, 8600051, 1) exited non-zero on 'SIP/8001-00000001'
[Feb 7 23:06:28] -- Executing [h@default:1] AGI in new stack
[Feb 7 23:06:28] -- <SIP/8001-00000001>AGI Script agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----16--------------- completed, returning 0

==================

vs3966*CLI> dahdi show status
No DAHDI found. Unable to open /dev/dahdi/ctl: No such file or directory
Command 'dahdi show status' failed.

==================

[root@vs3966 ~]# lsmod | grep dahdi
(nothing happens)

==================

[root@vs3966 ~]# dahdi_cfg -vvv
DAHDI Tools Version - 2.9.0.1
Notice: Configuration file is /etc/dahdi/system.conf
line 0: Unable to open master device '/dev/dahdi/ctl'

1 error(s) detected

==================

Tryed to install manually:

[root@vs3966 ~]# cd dahdi-linux-complete-2.11.1+2.11.1/
[root@vs3966 dahdi-linux-complete-2.11.1+2.11.1]# ls
ChangeLog linux Makefile README tools
[root@vs3966 dahdi-linux-complete-2.11.1+2.11.1]# make all
make -C linux all
make¹: Entering directory `/root/dahdi-linux-complete-2.11.1+2.11.1/linux'
make -C drivers/dahdi/firmware firmware-loaders
make<sup>2</sup>: Entering directory `/root/dahdi-linux-complete-2.11.1+2.11.1/linux/drivers/dahdi/firmware'
make²: Leaving directory `/root/dahdi-linux-complete-2.11.1+2.11.1/linux/drivers/dahdi/firmware'
You do not appear to have the sources for the 3.10.0-229.20.1.el7.centos.plus.x86_64 kernel installed.
make<sup>1</sup>: * [modules] Error 1
make<sup>1</sup>: Leaving directory `/root/dahdi-linux-complete-2.11.1+2.11.1/linux'
make: * [all] Error 2

==================

Previously i installed kernel-devel
yum install kernel-devel

but when i tried to reinstall dahdi system asks for 3.10.0-229.20.1.el7.centos.plus.x86_64 kernel installed.

As you see i tried to make something from the forum, but no success. Please guys, help me to find a solution, I cannot install the .iso, it is a vps server.