05-02-2012 01:04 PM - edited 03-21-2019 05:44 AM
We have a UC520 connected to a group of 7945 phones in the office, and Verizon POTS on the outside. If you're having a conversation with someone who happens to be an outside caller, is the conversation full duplex - meaning can both sides talk at the same time, and both sides hear the opposing side? Or is the conversation simplex switched so that only one person can talk at a time?
Thanks
Roscoe
05-02-2012 10:50 PM
Hi Roscoe,
Yes the conversation should be full duplex.
HTH,
Alex
05-03-2012 06:19 AM
What might cause drop outs when the in house person speaks, and his voice cuts off the outside person's coming in?
We had a problem with nasty echo and static, so we "lowered" output attenuation and input gain on the voice ports connected to Verizon. This fixed the echo (at least so far), but it also seems to have caused a situation where the inhouse person's voice can cut off the outside person's coming in voice.
Thanks
05-03-2012 06:32 AM
If you connect normal analog phone on the wire do you experience the same problems?
If not please share the FXO port settings and ephone settings on one of the 7945 phone.
Best regards,
Alex
05-03-2012 06:56 AM
Barev!!
Normal analog phone shows no noise and no echo. Here are the configs on the voice ports and the Ephones.
voice-port 0/1/0
trunk-group ALL_FXO 64
supervisory disconnect dualtone mid-call
input gain -3
timeouts call-disconnect 3
timeouts wait-release 3
connection plar opx 201
description Configured by CCA 4 FXO-0/1/0-OP
caller-id enable
!
voice-port 0/1/1
trunk-group ALL_FXO 64
supervisory disconnect dualtone mid-call
input gain -3
timeouts call-disconnect 3
timeouts wait-release 3
connection plar opx 201
impedance 600c
description Configured by CCA 4 FXO-0/1/1-OP
caller-id enable
!
voice-port 0/1/2
input gain -3
connection plar 304
impedance complex5
!
voice-port 0/1/3
output attenuation -6
shutdown
!
_________________________________________
ephone-dn 1 dual-line
number 201 no-reg primary
pickup-group 1
label EMERGENCY
description Recept1
name Tina
call-forward busy 202
call-forward noan 298 timeout 20
corlist incoming voice
huntstop channel
night-service bell
!
!
ephone-dn 2 dual-line
number 202 no-reg primary
pickup-group 1
label 202 Julie
description Recept2
name Julie
call-forward busy 298
call-forward noan 298 timeout 20
corlist incoming voice
!
!
ephone-dn 3 dual-line
number 203 no-reg primary
pickup-group 1
label 203 Donna
description Busoffice
name Donna Desantis
call-forward busy 299
call-forward noan 299 timeout 30
corlist incoming voice
!
!
ephone-dn 4 dual-line
number 204 no-reg primary
label 204 Nick Up
description Nick Desantis
name Nick Desantis
call-forward busy 298
call-forward noan 298 timeout 30
corlist incoming voice
!
!
ephone-dn 5 dual-line
number 205 no-reg primary
label 205 Consult
description Conference1
name Conference1
call-forward busy 298
call-forward noan 298 timeout 30
corlist incoming voice
!
!
ephone-dn 6 dual-line
number 206 no-reg primary
label 206 Break
description Break Room
name Break Room
call-forward busy 298
call-forward noan 298 timeout 30
corlist incoming voice
!
!
ephone-dn 7 dual-line
number 207 no-reg primary
label 207 Lab
description Laboratory1
name Laboratory1
call-forward busy 298
call-forward noan 298 timeout 30
corlist incoming voice
!
!
ephone-dn 8 dual-line
number 208 no-reg primary
label 208 Nick Desantis
description NickPer Desantis
name NickPer Desantis
call-forward busy 298
call-forward noan 298 timeout 30
corlist incoming voice
!
!
!
!
ephone 1
device-security-mode none
video
mac-address 0024.C443.9D84
ephone-template 1
username "recept01" password 21187
fastdial 1 xxxxxxx (redacted)
type 7965 addon 1 7916-24 2 7916-24
button 1:1 2m21 3m22 4m23
button 5m24 7m3 8m4 9m5
button 10m6 11m7 12m8
night-service bell
!
!
!
ephone 2
device-security-mode none
video
mac-address 0025.84A1.620B
ephone-template 1
username "Recept02" password 12345
type 7945
button 1:2
!
!
!
ephone 3
device-security-mode none
video
mac-address 0025.84A3.2A48
ephone-template 1
username "Busoffice"
type 7945
button 1:3
!
!
!
ephone 4
device-security-mode none
video
mac-address 0025.84A2.686E
ephone-template 16
username "NickJr" password 12345
type 7945
button 1:4
!
!
!
ephone 5
device-security-mode none
video
mac-address 0025.84A3.2B8B
ephone-template 16
username "Conference1" password 12345
type 7945
button 1:5
!
!
!
ephone 6
device-security-mode none
video
mac-address 0025.84A2.6211
ephone-template 16
username "Break" password 12345
type 7945
button 1:6
!
!
!
ephone 7
device-security-mode none
video
mac-address 0025.84A3.2A2B
ephone-template 16
username "Lab1" password 12345
type 7945
button 1:7
!
!
!
ephone 8
device-security-mode none
video
mac-address 0025.84A3.2A2C
ephone-template 1
username "NickPer" password 12345
type 7945
button 1:8
______________________________________
UC520Desantis01#show voice port 0/1/0
Foreign Exchange Office 0/1/0 Slot is 0, Sub-unit is 1, Port is 0
Type of VoicePort is FXO
Operation State is UP
Administrative State is UP
The Last Interface Down Failure Cause is Administrative Shutdown
Description is Configured by CCA 4 FXO-0/1/0-OP
Noise Regeneration is enabled
Non Linear Processing is enabled
Non Linear Mute is disabled
Non Linear Threshold is -21 dB
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to -3 dB
Out Attenuation is Set to 3 dB
Echo Cancellation is enabled
Echo Cancellation NLP mute is disabled
Echo Cancellation NLP threshold is -21 dB
Echo Cancel Coverage is set to 128 ms
Echo Cancel worst case ERL is set to 6 dB
Playout-delay Mode is set to adaptive
Playout-delay Nominal is set to 60 ms
Playout-delay Maximum is set to 1000 ms
Playout-delay Minimum mode is set to default, value 40 ms
Playout-delay Fax is set to 300 ms
Connection Mode is plar opx
Connection Number is 201
Initial Time Out is set to 15 s
Interdigit Time Out is set to 10 s
Call Disconnect Time Out is set to 3 s
Power Denial Disconnect Time Out is set to 1000 ms
Ringing Time Out is set to 180 s
Wait Release Time Out is set to 3 s
Companding Type is u-law
Region Tone is set for US
Analog Info Follows:
Currently processing Voice
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Impedance is set to 600r Ohm
Station name None, Station number None
Caller ID Info Follows:
Standard BELLCORE
Caller ID is received after 1 ring(s)
Translation profile (Incoming):
Translation profile (Outgoing):
lpcor (Incoming):
lpcor (Outgoing):
Voice card specific Info Follows:
Signal Type is loopStart
Battery-Reversal is enabled
Number Of Rings is set to 1
Supervisory Disconnect is dualtone mid-call
Answer Supervision is inactive
Hook Status is Off Hook
Ring Detect Status is inactive
Ring Ground Status is inactive
Tip Ground Status is inactive
Dial Out Type is dtmf
Digit Duration Timing is set to 100 ms
InterDigit Duration Timing is set to 100 ms
Pulse Rate Timing is set to 10 pulses/second
InterDigit Pulse Duration Timing is set to 750 ms
Percent Break of Pulse is 60 percent
GuardOut timer is 2000 ms
Minimum ring duration timer is 125 ms
Hookflash-in Timing is set to 600 ms
Hookflash-out Timing is set to 400 ms
Supervisory Disconnect Timing (loopStart only) is set to 350 ms
OPX Ring Wait Timing is set to 6000 ms
Secondary dialtone is disabled
05-03-2012 08:02 AM
Please check the dialpeers you are using and make sure you have "no vad" under their configuration. If you cannot see "no vad" please add it and test.
Best regards,
Alex
05-03-2012 09:15 AM
Will do.
05-04-2012 03:05 AM
There are a slew of dial peers, most of whom have nothing to do with those outside lines. Do I need to set this on all dial peers, or just the ones that seem to be associated with outgoing lines?
Thanks
05-04-2012 04:07 AM
Try with the one for outside.
Best regards,
Alex
05-04-2012 04:29 AM
Alexander Maroukian wrote:
Please check the dialpeers you are using and make sure you have "no vad" under their configuration. If you cannot see "no vad" please add it and test.
Alex, VAD option only applies to voip dial-peer, not to pots ones.
OP problem must lie elsewhere. Possibly, non-optimal FXO port impendence setting.
05-04-2012 09:28 AM
Hi Paolo,
Absolutely right. Thank you for pointing this. I mixed with another post about sip:) my apologies Roscoe. Please try on one FXO with default configuration on one of the ports.
Please check the following link on how to check the implendance :
http://www.cisco.com/en/US/tech/tk652/tk701/technologies_tech_note09186a0080477a06.shtml
You can try THL Tone Sweep Method.
Please let me know if you fix it this way.
HTH,
Alex
05-04-2012 12:21 PM
Hi Roscoe,
Paolo did make me think over my mistaken post and actually this gives me idea to make another test. Please enter "no vad" under voice-port of one of the fxo ports e.g. voice-port 0/1/0. Please tell me if this fix the issue. You can try this on default port configuration also.
Best regards,
Alex
05-05-2012 03:53 AM
Please state what exact IOS are you running ?
It is not normal of having to drop the default gain and values. So more investigation is needed to find what really is happening.
05-06-2012 09:41 AM
We tried connecting analog phones to the Verizon FIOS lines, and found no noise or echo. Tried replacing the wires that connected the UC520 with the FIOS box. No change seen.
Ran impedance test on all lines, and set impedance accordingly. No change seen.
IOS version is
show ver
Cisco IOS Software, UC500 Software (UC500-ADVIPSERVICESK9-M), Version 15.1(2)T4, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Tue 12-Jul-11 22:01 by prod_rel_team
ROM: System Bootstrap, Version 12.4(11r)XW, RELEASE SOFTWARE (fc1)
UC520DiNinno01 uptime is 1 week, 6 days, 22 hours, 43 minutes
System returned to ROM by reload at 10:55:39 PST Sun Apr 22 2012
System restarted at 13:54:02 EDT Sun Apr 22 2012
System image file is "flash:uc500-advipservicesk9-mz.151-2.T4"
Last reload type: Normal Reload
Last reload reason: Reload Command
Cisco UC520-8U-4FXO-K9 (MPC8358) processor (revision 0x202) with 235520K/26624K bytes of memory.
Processor board ID FHK113310F6
MPC8358 CPU Rev: Part Number 0x804A, Revision ID 0x20
14 User Licenses
10 FastEthernet interfaces
2 terminal lines
1 Virtual Private Network (VPN) Module
4 Voice FXO interfaces
4 Voice FXS interfaces
1 Voice MoH interface
1 cisco service engine(s)
128K bytes of non-volatile configuration memory.
500472K bytes of ATA CompactFlash (Read/Write)
-------------------------------------------------
Device# PID SN
-------------------------------------------------
*0 UC520-8U-4FXO-K9 F******
Configuration register is 0x2102
05-06-2012 09:45 AM
Hi,
Did you try default configuration of the FXO port and also the no vad?
Best regards,
Alex
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