Displaying 20 results from an estimated 900 matches similar to: "call quality monitoring"
2005 Sep 08
10
voice over atlantic
Hi-
I'm using IAX between two boxes, where one box is located in US and the
second in Europe. I'm trying to achieve the best voice quality and
mainly reliability between these boxes and looking for hints and
experience of others.
Facts:
- Asterisk 1.0.7
- RTT varies from 130-170 ms, depends on time and actual Internet
throughput
Questions:
- What is the sugested codec for such setup?
2005 May 13
0
Problem with IAX trunking
Hi all,
I'm trying to get IAX2 trunking between two * boxes and am having
extreme difficulty :) What happens is when the sending * server (the one
initiating the call) receives the ACCEPT back from the receiving server
it immediately replies with INVAL. I've checked the code and it seems to
be not matching the accept packet with the relevant item in the iaxs
array due to the following
2006 May 22
1
SIP to IAX - forcing codec pass thru
hi
We take calls inbound via SIP from our Cisco PSTN gateways, and pass it
to customers using IAX (they run their own asterisk servers).
We've noticed that asterisk is transcoding the call into a different
codec, if the customer prefers a codec different to that which our cisco
gw prefers. As such, the quality of the call can degrade.
We'd rather asterisk just passed through the RTP
2004 Dec 01
6
Asterisk + Satellite connection
Hello,
I have an Asterisk with one local Cisco ATA and one remote Cisco ATA
connected to the Asterisk, the remore connection is a satellite link
with an 900ms delay. I can make calls from the remote site to the
local site, but when try to call from local to remote it doesn't work.
The Asterisk timesout, it sais no one answered and can?t establish
the connection.
Can anybody help me with
2004 Sep 20
2
Cisco 76XX - How to ignore a call (silence ring)
I am preparing to setup a system using Cisco 7940 and 7960's I have the
7.1 SIP firmware on them.
One issue I have run into is how to silence the ringer if a call comes
in and you don't want to take it.
Many phones have a DND button. I know the 79XX has the DND in the menu
but it is to cumbersome to go into the settings then phone preferences
then the DND and select yes.
Is there any other
2007 Apr 20
6
How can I improve call quality?
Hi All,
I've a single 1.2.17 Asterisk system. Gradwell here in the UK is used
for PSTN calls via IAX2.
Our 'net link is a dedicated 2Mb fibre connection (of which we have ever
used 50% max bandwidth). We've no E1/T1 links, everything is IP based.
My boss complains that many of the calls he holds with others has a bad
quality. He also says that its not just him.
My iax.conf file
2005 Jan 17
1
here's my IAX callthrough app and some questions about problems I have.
Hello all,
What my app does is accepts a call in on a Dial-In Number (DID) via
IAX, and then prompts the caller for the top secret password (123) and
then authenticates the user and prompts them to dial in the number
they'd like to call. Once they press pound after dialing in the number
it will read it back to them, if they press pound it will attempt to
connect via the second IAX provider,
2004 Aug 06
2
RC1 problem? (Conversation over two IAX2 streams = nasty, gappy audio)
I've been having 'gappy' audio problems with nufone for about a week now but I
think I've nailed it down.
Setup:
office* - iax2 - colo* - iax2 - nufone
office* and colo* are identical physical hardware (Xeon 2.8, dual ethernet,
solely used for Asterisk) -- they are joined together through their second
ethernet ports over a dedicated 2meg SDSL link. One hop between office* and
2006 Oct 24
2
IAX2 goes "one way audio" when lag gets bad
Hi,
I have a customer who experiences, once in a while, one-way audio...
That is... they can hear the person they called, but the person can
not hear them.
The customer is connected via IAX2 to our softswitch.
On the customer's end I have the following config in iax.conf:
[general]
bindport = 4569 ; Port to bind to (IAX is 4569)
bindaddr = 0.0.0.0 ; Address to bind to (all
2010 Aug 23
2
Quantile Regression and Goodness of Fit
All -
Does anyone know if there is a method to calculate a goodness-of-fit
statistic for quantile regressions with package quantreg?
Specifically, I'm wondering if anyone has implemented the
goodness-of-fit process developed by Koenker and Machado (1999) for R?
Though I have used package quantreg in the past, I may have overlooked
this function, if it is included.
Citation:
Koenker, R. and
2008 Dec 18
2
Contextstack overlow
All -
I have a number of rows that I am assigning length classes to via
l.class<-with(wae,
ifelse((Length>=120)&(Length<130),"125",
ifelse((Length>=130)&(Length<140),"135",
ifelse((Length>=140)&(Length<150),"145",
ifelse((Length>=150)&(Length<160),"155",
2004 Aug 27
5
iaxtel and jitterbuffer
I am trying to work out IAX <--> IAX communications with my * box. I have a
registration with iaxtel and I thought I would start there for my learning.
I am able to call the number for Digium's support line (700-428-6000), but the
sound is horribly chopping. Some reading revealed the jitterbuffer settings,
so I enabled them in iax.conf. I have the following now:
; Inter-Asterisk
2004 Sep 10
8
Organization wide
After our department went to using *, I've had several inquiries about
doing VoIP for my entire organization (Small county). We have ~10
locations with various links in between (Mostly p2p T1s, some Frame
(1.544mbps commit), some ISDN, some VPN over 768kbit internet) Right now
we're using several NEC Electra Elite systems, and 2 Nortel Meridian
systems. In one of the main locations we have
2006 Oct 16
3
Why is this happening?
In my IAX config file I have:
[general]
bindport = 4569 ; Port to bind to (IAX is 4569)
bindaddr = 0.0.0.0 ; Address to bind to (all addresses on machine)
delayreject=yes
disallow=all
allow=ulaw
allow=gsm
jitterbuffer=yes
forcejitterbuffer=yes
mailboxdetail=yes
dropcount=3
minexcessbuffer=80
jittershrinkrate=1
notransfer=yes
allanrobertson- 209.23.224.97 (D) 255.255.255.255
2010 Nov 19
1
TukeyHSD error
All -
I think I'm being dense, but for the life of me, I can't figure out
why I get error message with the code below.
I have data that looks like
param level perc.surv asin.tran
DO 3 0.6864407 0.9764544
DO 3 0.1250000 0.3613671
DO 3 0.8738739 1.2077299
DO 4 0.4615385 0.7468986
DO 4 0.5691057 0.8547258
DO 4 0.8504673 1.1737517
DO 6 0.5494505 0.8349297
DO
2005 Feb 08
5
jitterbuffers - suggested settings
Hi,
I was wondering if anyone else has a similar setup and can suggest
settings for the jitterbuffer:
I have a client with an ADSL connection at site A & B with site A being
dedicated to voice and having no Asterisk server, site B combining
voice and data with traffic shaping and housing an Asterisk server.
There seems to be packet loss / jitter on this connection and I wanted
to know
2012 Nov 27
4
Finding values in one column and
All -
I have a data frame
data.a
ID valueA valueB
6 12 12
17 15 14
58 18 16
98 11 12
73 19 20
84 19 14
58 20 14
24 11 12
81 15 16
21 15 14
62 14 12
67 13 14
78 13 17
35 10 13
13 11 15
14 17 18
85 16 15
35 13 9
18 15 16
and a data frame
data.b
ID valueA valueB
6
84
21
78
14
I'd like to have R find the data.b$ID in data.a$ID and insert the
corresponding data.a$valueA and
2012 Dec 11
5
Retain last grouping after a strsplit()
All -
I have a column of SiteNames:
SiteName
OYS-PIA2-FL-1
OYS-PIA2-LA-1
OYS-PI-LA-BB-1
OYS-PIA2-LA-10
...
[truncated]
and I want to include only the last few digits into a new column.
I tried
substr(data$SiteName, 13, 20)
but because some SiteName values are of a different length, the final
hyphen (i.e., "-") was included:
"1"
"1"
"-1"
"10"
2008 Jun 12
2
Predicting from an nls model
I keep running up against the same error when I try to plot a line from a nls model. The data is fisheries length/weight data. Code follows:
require(graphics)
pow = nls(Weight~alpha*Length^beta, data=wae,
start=list(alpha=0.0000001, beta=3.0), trace=TRUE)
predict(pow)
plot(Weight~Length,
2011 Mar 24
3
tapply with specific quantile value
All -
I have an example data frame
x l.c.1
43.38812035 085
47.55710661 085
47.55710661 085
51.99211429 085
51.99211429 095
54.78449958 095
54.78449958 095
56.70201864 095
56.70201864 105
59.66361903 105
61.69573564 105
61.69573564 105
63.77469479 115
64.83191994 115
64.83191994 115
66.98222118 115
66.98222118 125
66.98222118 125
66.98222118 125
66.98222118 125
and I'd like to get the 3rd