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Telecommunication occurs when the exchange of information between two or more entities (communication) includes the use of technology. Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves. The word is often used in its plural form, telecommunications, because it involves many different technologies.

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I know a little about VOIP so please bear with me on this <g>

I know of services like Vonage that use an adapter - plug the ethernet into the box and it has an rj11 for a regular phone.

Then there are services that use a 'VOIP phone' like the grandstream GXP2130.  Is there a word or phrase that distinguishes these 2 type of services?

or most any service can use both - the adapter or voip phone?

And specifically, i have a spare GXP2130 phone. I'd like to know if I can set that up to make & receive calls using google voice?

or are there other free / very cheap services? I don't care about reliability really.  if its down for hours at a time not a big deal. not looking to port a number to the service. Just have another line / experiment with this gxp2130
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I have tried on 3 machines (Win 7) and 3 mobiles (Android) but only one combination shows up as COM3 in Hyperterminal.
My purpose is to send SMS via Serial port. I can send successfully from this one combination.
I want the others to work too. All mobiles connect to the machine and I can access the Internal and External drives.

By COM3 I mean COM1,2,3,4....
windows 10 chrome browser

Using google voice, I want to call a government worker.
Phone rings to voicemail.
This government worker does not call back if I leave voicemail

So I want to set up a way to call numerous times thoughout the day but disconnect if phone reaches voicemail
I am unable to login to Grandstream GXP2170 with username admin and password admin.

How to reset Grandstream GXP2170 to factory defaults?

Please provide your response asap.

Warm Regards,
Hello Experts,
We are using Vicidial version 2.6-381a with Asterisk 1.4.44-VICI, I have strange issue one of my user extension 508 voice mail going into ext 801 voicemail box when using DID but when dial extension 508 it goes into right mailbox of 508, i have checked the user phone settings, DID settings to make sure DID rings and send voicemail to right extension from vicidial gui, here is Dial plan for ext 508 which is setup properly can someone please help me figure this out. Thanks

exten => 3508,1,AGI(agi://
exten => 3508,n,AGI(agi-NVA_recording.agi,BOTH------Y---Y---Y)
exten => 3508,n,Wait,2
exten => 3508,n,Playback(/var/lib/asterisk/sounds/44048020)
exten => 3508,n,Wait,2
exten => 3508,n,Playback(/var/lib/asterisk/sounds/85100075)
exten => 3508,n,Wait,2
exten => 3508,n,Dial(SIP/508,15,Ttr)
exten => 3508,n,Wait,2
exten => 3508,n,Playback(/var/lib/asterisk/sounds/85100031)
exten => 3508,n,Dial(SIP/508&SIP/801&SIP/505&SIP/507&SIP/509,15,Ttr)
exten => 3508,n,Wait,2
exten => 3508,n,Playback(/var/spool/asterisk/voicemail/default/508/unavail)
exten => 3508,n,VoiceMail(508@default)
Hi, I had a new phone system installed and when I lift the handrest line 2 picks up and not line 1. I need CO1 to pickup by default since thats the line has unlimited calls rather then the 2nd line has pay per call. Can anyone help how to program the phone from picking up line 2 and pick up line 1.
On cisco IP phones (model number 7911) it stores some useful information about placed/received calls in the directories application- is this data stored locally on some storage within the phone, or would this be stored in a central database in a managed voip environment, if so being a cisco device can you elaborate where that information may be stored.
Need 2-line analog phones (not VOIP).  Can't seem to find anything reasonably priced for my client.  Their needs are pretty simple:

1.  Telephones (quantity 4) for two-line analog.
2. Must be able to indicate when a call was missed or message was left, by way of an LED on the phone.
3. Must be able to page the other phones (hands free) by pressing a page button.
4. (optional) Intercom capability.

They currently have 2 of the Cortelco 7-series 2740 phones. These have been replaced by the 2750, and they're over $200 each and take 3 weeks to ship.

Anyone have a better idea for 2-line phones?

We supply a software application that is run on Remote Desktop servers (each client has their own Virtual Server).  One of the areas I am currently researching is to provide the ability for users to click on a "Call" button in our application, and dial the number (whilst connected to the RDP).  I have found a couple of solutions that will allow me to press the "Call" button, which will then dial the recipient's number (along with the user making the call), which in theory, should be ok - but I am yet to test it and am interested in all options.

For me, the perfect solution would be for users to be able to plug in a headset on their local laptop, run the application on the Remote Desktop and call - without impacting server performance in any way.  Or, if they have a phone system already in place - somehow dial through that.

Any pointers, products, suggestions - would be massively appreciated.
Hello We are using Vicidial version 2.6-381a with Asterisk 1.4.44-VICI, I am trying to set up my dialplan entry so we can call out from Canada to Irland and Trinidad, our current Dialplan allow us to call only witin north america but not outside,
Here I have the country and area codes that need to be called out from Canada
Irland 353-287-xxx-xxxx
Trinidad 868-788-xxxx

Here I have my Dailplan that i have made up to call out but no luck can someone please guide me correct dialplan please

exten => _9353NXXXXXXXXX,1,AGI(agi://
exten => _91868NXXXXXX,1,AGI(agi://
exten => _9353NXXXXXXXXX,2,Dial(SIP/${EXTEN:1}@modulis-outbound2)
exten => _91868NXXXXXX,2,Dial(SIP/${EXTEN:1}@modulis-outbound2)
exten => _9353NXXXXXXXXX,3,Hangup
exten => _91868NXXXXXX,3,Hangup

Here is the call_log but no luck (last 4 digits of phone number being modified to xxxx)

[Nov 1 13:48:07] == Using SIP RTP CoS mark 5
[Nov 1 13:48:07] -- Executing [1868788xxxx@defaultlog:1] AGI("SIP/298-00017de5", "agi-NVA_recording.agi,BOTH------Y---Y---Y") in new stack
[Nov 1 13:48:07] -- Launched AGI Script /usr/share/asterisk/agi-bin/agi-NVA_recording.agi
[Nov 1 13:48:07] -- AGI Script Executing Application: (Monitor) Options: (wav,/var/spool/asterisk/monitor/MIX/20171101134807_298_1868788xxxx)
[Nov 1 13:48:07] -- <SIP/298-00017de5>AGI Script agi-NVA_recording.agi completed, returning 0
[Nov 1 13:48:07] -- Executing [1868788xxxx@defaultlog:2]
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Do the Comcast Panasonic KX-TPA65 VOIP phones also have a network jack for plugging in a PC (in addition to plugging the phone into the network)?
If your answer is factory reset, please skip this question.

User reported a problem for iPhone 7.

On iOS 11.0.2, outgoing phone call  can be made but no incoming phone call could be made.

On iOS 11.0.3, the situation is reverse. No outgoing phone call could be made whereas sometimes incoming phone calls can be made.

However, if the user dials a USSD code which is carrier-specific, it will be OK to dial an outgoing call for once.

Already contacted the carrier and the SIM card is fine on another Android phone or iPhone.

How to fix without factory reset?

Phone call is a basic feature of a smartphone and I have not encountered similar problem in any Android phones.
I need some insights on how to start a call Center for a medical office. The office averages about 350 inbound phone calls per day and 200 outbound calls daily. Any suggestions as of best applications, service providers to use for this project would be greatly appreciated.

I've been struggling with VOIP call quality. One thing I notice is where calls to PSTN or Conference are made from work on the west coast or from home on the west coast - the traffic takes a 100ms trip to the east coast to get to the Skype voice control and RTP gateways. Is there any way this can be altered so you can use gateways on the west coast to reduce hops and delay to the Skype voice gateways?
This phone will be exclusively used in Vietnam, 5% Cambodia, 5% Thailand.

Desired specs:
2G or more likely 3G, dual slot, camera, internet capable, touch screen.
Apple and Samsung won't work as they are too expensive.

As far as data for internet I do not know how many GB they would desire (or really need) and I can not pry to much as far as what they would want. The gift is to be a phone far better than the one they have (previous question on Nokia 150).
CDMA is not used outside of North America, so you will not get any coverage at all. Your CDMA phone will useless in Vietnam or prettywell anywhere outside of the USA and Canada (and even there CDMA is a dying standard). You will need a GSM phone and one that operates on non-North American frequencies; i.e. a quad-band phone.
I'll later post the specs of my Kata phone since they told me that my phone was quite better than theirs.
Here they are:
Kata V4 - 4.5-inch IPS Quad Core International Unlocked Smartphone Android 5.1 - Dark Grey - Super Slim HD 1.3 GHz Dual Sim Card GSM 8MP Camera
GSM Quadband 850/900/1800/1900, 3G WCMA 850/1900/2100, Android 5.1 (Lollipop)
4.5" IPS FWVGA Display: (480 x 854) with 1.3 GHz Quad-Core Processor
8MP Camera with LED Flash with HD recording , 5MP Front Camera for Video Calling and instant self portraits
8GB ROM, 1GB RAM with 32GB expandable storage …
I thought I had found an optimal solution in Possio Greta:


But I talked to the head office in Sweden, and it turned out that it doesn't work everywhere in the world. I can't remember the details now, but I had a lengthy discussion about it, and it's of quite limited use for me when I travel between different parts of the world and different countries.

Otherwise, is there any alternative to smartphone and internet, such as a small portable fax machine or any other device or other type of communication (analogue instead of digital etc.)? Telex, satellite, short-wave radio, SIP for fax etc.?
I have a pair of C-level users who both experienced a problem at one of my sites. I'm trying to determine if it's a GoToMeeting problem (not my problem) or a phone problem (definitely my problem). You guys will give me a quick answer, I just know it. :-)

When the users join the audio portion of a GoToMeeting event from their Cisco desk phones (on my CUCM-powered phone system), right after the point where they enter their PIN number for the meeting, they are supposed to press the pound key "#" to join the audio part of the meeting. Every time each of them presses the "#" key on their desk phones, either the meeting or the phone hangs up the call. When they join using their cell phones it works fine.

This just started happening and no changes have recently been made to the phones or the CUCM settings. I'm told that it happened once before but was not reported, and that other occasion occurred several months ago but then the conditions returned to normal operation and they didn't see this again until yesterday.

Can I get some opinions on which party is responsible?

Thanks experts!
got a missed calls from last two months, This evening I got a ring from +381 628302791 at 4:08.Whoever calling rings 1-2 times and disconnects immediately.
searched on google Which country code +381, It's from Serbia I shocked why I got calls from this area.
I would like to know, is this going to be a problem? Like hacking etc??
We have KX-NT700 model, and was working fine with our Panasonic PABX, until we check it today.

The dial tone is missing when we press speaker phone, hence not able to call.

The basic settings are intact as i compared with Phone Manual, such as :

We are trying it through the telephone extension line (Ext: 222) , while this line is being used with KX T7665 without any issue.

For your knowledge, this phone had an extension of 300 while it was working fine before.

Please suggest if there is any configuration issue in the phone or this is a mechanical fault in it ?

Thanks in advance.
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I have a few quick questions which I would like to add to this thread, easy ones, its just Im not used to using Android.  On my new Samsung Galaxy Note 8, even when I have no sim card in there or when in airplane mode, it shows full bars receptions.  What gives?
What is the best practice of backing up Cisco Call Manager 11.5 ? (VM)
Just want to get folks opinions.  Anyone using them?  Any feedback?
Trying to implement sparkboards in every new office and eliminate things like conference phones, polycoms, and all that legacy stuff.


I'm confused with the above.  Is there just one type of Samsung Note 8 i.e. are they all dual sim compatible?  because the above web site does not explain the different between the two options and on Amazon people are selling the dual sim versions for over GBP 1000 where is the single sim is GBP 800.
Question -
company's IP phones/voice managed by 3rd party.  No PBX on-site.  
Is SIP Trunking still required for the calls or its just calling over the Internet?
specifically looking to send a message to

+86 186 1156 98xx


Telecommunication occurs when the exchange of information between two or more entities (communication) includes the use of technology. Communication technology uses channels to transmit information (as electrical signals), either over a physical medium (such as signal cables), or in the form of electromagnetic waves. The word is often used in its plural form, telecommunications, because it involves many different technologies.