I have a problem with voice quality.
I am using PhoneJack phone card, but I do not understeand the card parameters a their values. Who can tell me what is the best values with brief description ?
playback-volume=0
record-volume=0
agc-on-playback=yes
agc-on-record=yes
aec=yes
aec-tail-length=short
aec-nlp-threshold=low
aec-attenuation-scaling=4
aec-attenuation-boost=0
software-aec=yes

Did you try looking in the manual?
http://www.mikrotik.com/docs/ros/2.8/ip ... ent#7.45.5

Yes I have read, but do you have an experience what is the best values ?

It should work with default values. What setup do you have? ..maybe problem is not in PhoneJack..
Anyway.. try to turn off agc-on-playback and agc-on-record, play with record-volume and playback-volume

I would like to disscus with you a problem with interruptions which I have during the voice calls.

I would like to disscus with you a problem with interruptions which I have during the voice calls.

so give some more information about your setup! From where (PhoneJack I suppose) to where (VoIP? Voicetronix? ISDN?) you are trying to call and so on.
I'm not a telepathist you know...

I have five routers as follows:
A. 64 kbps - Frame Relay - PhoneJack - PBX
B. 64 kbps - Frame Relay - PhoneJack - PBX
C. 64 kbps - Frame Relay - PhoneJack - PBX
D. 64 kbps - Frame Relay - PhoneJack - PBX
E. 512 kbps - Ethernet - Voicetronix - PBX
During conversation from all of them I have interruption to router E.
Router A (B,C,D) mangle:
Flags: X - disabled, I - invalid, D - dynamic
0 src-address=192.168.4.0/24 in-interface=ether2 action=accept
mark-flow=data set-tos=224

1 src-address=192.168.10.18/32 dst-address=192.168.0.0/20 action=passthrough
mark-flow=voice set-tos=96
Router A (B,C,D) queue tree:
0 name="data" parent=KK-Ruse flow=data limit-at=0 queue=synchronous-default
priority=8 max-limit=0 burst-limit=0 burst-threshold=0 burst-time=0

1 name="voice" parent=KK-Ruse flow=voice limit-at=64000
queue=synchronous-default priority=1 max-limit=64000 burst-limit=0
burst-threshold=0 burst-time=0

2 name="KK-Ruse" parent=pvc1 flow="" limit-at=64000
queue=synchronous-default priority=8 max-limit=64000 burst-limit=0
burst-threshold=0 burst-time=0
--------------------------------------------------------------------------------------
Router E mangle:
0 src-address=192.168.0.0/24 in-interface=ether3 action=accept
mark-flow=data set-tos=224

1 src-address=192.168.10.5/32 dst-address=192.168.0.0/20 connection=!data
action=passthrough mark-flow=voice set-tos=96
Router E queue tree:
0 name="KK-Baza" parent=ether2 flow="" limit-at=512000
queue=synchronous-default priority=8 max-limit=512000 burst-limit=0
burst-threshold=0 burst-time=0

1 name="data" parent=KK-Baza flow=data limit-at=320000
queue=synchronous-default priority=8 max-limit=320000 burst-limit=0
burst-threshold=0 burst-time=0

2 name="voice" parent=KK-Baza flow=voice limit-at=320000
queue=synchronous-default priority=1 max-limit=512000 burst-limit=0
burst-threshold=0 burst-time=0
--------------------------------------------------------------------------------------
Phonejack configurations:
0 name="phonejack-pci1" autodial="" region=us
ring-cadence="++-++--- ++-++---" playback-volume=6 record-volume=4
agc-on-playback=yes agc-on-record=yes aec=yes aec-tail-length=short
aec-nlp-threshold=low aec-attenuation-scaling=4 aec-attenuation-boost=0
software-aec=yes
Voicetronix configuration:
0 name="vctx1" autodial="" region=us playback-volume=5 record-volume=4
agc-on-playback=yes agc-on-record=yes detect-cpt=no
loop-drop-detection=no balance-registers=200 balance-status="-1.87dB"

1 name="vctx2" autodial="" region=us playback-volume=10 record-volume=4
agc-on-playback=yes agc-on-record=yes detect-cpt=yes
loop-drop-detection=no balance-registers=200 balance-status="-2.15dB"

2 name="vctx3" autodial="" region=us playback-volume=6 record-volume=3
agc-on-playback=yes agc-on-record=yes detect-cpt=yes
loop-drop-detection=no balance-registers=200 balance-status="-1.99dB"

3 name="vctx4" autodial="" region=us playback-volume=6 record-volume=4
agc-on-playback=yes agc-on-record=yes detect-cpt=yes
loop-drop-detection=no balance-registers=200 balance-status="-1.80dB"
Please if you need more information let me know.
Kamen

Do you have interruptions with all queues disabled?

During conversation from all of them I have interruption to router E.

so you are calling TO router E or through it (to PSTN)?

Yes.
I have to use queues, because I have voice and data.
How quality is going to improve If I disable queues ?

For example:
Call from A TO E:
PBX-PhoneJack-MT-FrameRelay - MPLS Core Network - Ethernet-MT-Voicetronix-PBX

How quality is going to improve If I disable queues ?

you'll see if your queues affect the quality.. if not then the problem is not in queues

PBX-PhoneJack-MT-...

PBX is connected to PhoneJack??
PhoneJack is FXS interface -- this means that only telephone device can be connected to it!

I use external line from PBX, so it is the same as telephone.

I use external line from PBX, so it is the same as telephone.

thats ok
so, what about queues?
and what is your pbx regional settings? you have region=us on PhoneJacks and Voicetronix... try to change this parameter

The PBX's are Panasonic KDX-100, but MT there is no options for my region in Bulgaria.
I will try the voice quality w/o queues.

MT there is no options for my region in Bulgaria.

Try germany
You can also try other codecs from `/ip telephony codecs` -- simply disable those you don't want to use (for example 711 -- they use much bandwidth). You can see what codecs you use monitoring an interface while speaking.

What is the difference between playback-volume and record-volume parameters ?

What is the difference between playback-volume and record-volume parameters ?

playback is what you hear (a card plays to the port) and record is what you say (a card is receiving signal)

When I adjusted playback-volume and record-volume the rsult was bette voice quality, so the problem was not in queues.