Solved Raspberry Pi 3 b+ SP issue when pickup a call from parking orbit

[French Jay]

Hi Team,

I have been ready forum about 3cx for the 2 or 3 last day about my issue.
I already have a couple of 3cx servers running in a cloud environment and working fine.
My issue is why a Raspberry Pi 3b+. I follow the tuto from 3cx.
Now I have 3 GXP 2130 sip phones connected to this network. I use the script to configure the MPK Key as MPK1 SP0, MPK2 SP1, ...
At this point the script been accepted by the phone and SIP trunk is okay. the customer receiving call and able to make calls Inbound/Outbound

The problem is when the business receives a call and puts the call on SP0 or SP1 ... and pickup this same call from another GXP2130 is just a one-way conversation. the customer caller will hear but can't talk, but on the business side the the mic will work.
Now when you make an external call and place this call on SP0 and pickup from another sip phone it will work as a two-way conversation.

The Modem is a Hitron CGN3 from Rogers:
SIP ALG is disable
IPv6 Disable
UPnP Enable
5060 UDP enable to 192.168.0.53 Raspberry pi server 3cx
9000-10999 UDP to 192.168.0.53

In the Script be default the Local RTP is 5004 should we changed to macht 9000-10999 like SIP phone1= 9500, SIP phone2=9900, SIP phone3= 10200?

{IF network=LOCALLAN}
<!-- Local RTP port (1024-65535, default 5004) -->
<P39>5004</P39>
<!-- STUN server -->
<!--P76 = -->
{ENDIF}

and

<!-- # Local RTP port range. Default is 200 -->
<!-- # Number: 48 - 10000 -->
<!-- # Mandatory -->
<P29610>200</P29610>
{ENDIF}

Also, try to change the codec in the 3cx extension but didn't help. Codec available is PCMU, PCMA, G729 A\B, G722

The firewall test failed. We did put the 3cx server as DMZ and it pass true.


What we forget here?!

Thank you for the little tips you can provide me

 

[JohnS_3CX]

Now I have 3 GXP 2130 sip phones connected to this network. I use the script to configure the MPK Key as MPK1 SP0, MPK2 SP1, ...

Hello,

What script are you referring to? The supported way of configuring your phones and BLFs is via the extension settings, and then provisioning the phone automatically from the management console

Kindly read this post here, and provide all the relevant information needed
https://www.3cx.com/community/threads/information-to-provide-when-requesting-help.67558/

 

[French Jay]

Hi,

I don't understand why the supported version is to use BLF via the extension when 3cx have a section in the settings dedicated to template for a lot of brands.

The template is the one in settings-->Template
GrandStream GXP SIP Phone
xml version="1.0
<type>phone-template</type>
<version>103725</version>
<time>2020-06-29 10:00:00</time>
<name>GrandStream GXP21XX</name>
<url>http://www.grandstream.com</url>

Raspberry:
root@raspberrypi:~# uname -a
Linux raspberrypi 5.4.72-v7+ #1356 SMP Thu Oct 22 13:56:54 BST 2020 armv7l GNU/Linux
root@raspberrypi:~# cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
root@raspberrypi:~# cat /etc/debian_version
10.6



even if I use the BLF for SP0 SP1 I have the same issue. I'm not able to hear the customer on the other side. But the customer is able to head me. That issue is only for Inbound calls. If we made an outbound call we don't have any issue when we place customer on SP0 SP1 to retrieve the calls

 

[French Jay]

[RESOLVED]

Hi Team,

I resolve the issue about Parking orbit and no sound when you retrieve your calls.

The problem comes from the SIP Trunk. It was set up as SRTP instead to be unchecked.
I'm still using the Script for GXP2130 what 3cx offers. It gives you more ability on the phone configuration.