IP Telephony

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IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.

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Hi My company added a couple of SIP lines to our MX box (Zultys MX 250). We ordered a separate cable modem and 7Mbps/768k plan from Time Warner and have the modem plugged directly into the MX box. Eve…

421 views
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Does anyone know of a way to dial toll free from the Philippines to the United States? I just need to make a minimal call - about 1-2 a month for less than 5 minutes each.

225 views

I have a telecom question.  What is the difference between SIP and PRI and Analog?  Also, are DID numbers related only to PRI?

322 views

Hi Experts

Could you point a good  telephony (IP and conventional) acronym source to get some terms explained?

I'm entering a call center project , Avaya/ CMS, and have doubts about a lot of ter…

914 views

I am looking to buy the following wireless headset and handset lifter (https://www.amazon.com/Plantronics-CS540-Wireless-Headset-Handset/dp/B006GQHRU8/ref=sr_1_2?ie=UTF8&qid=1479341394&sr=8-2&keywords…

522 views

We are experimenting with deploying a VOIP system at a secondary office of one of our clients. This office is linked to their main network by a persistent VPN setup between their Watchguard routers. W…

426 views

Currently I have a client that is in dispute with their vendor that provides their Internet and phone. The dispute is over billing. Is there anyway to port their numbers over to another vendor or do t…

329 views

Hello EE,

We are rolling out Single Number Reach and soft phones to a group of users to test.
I am wondering as we want valid feedback if anyone has any survey templates already that ask the quest…

439 views

I am in a town that has the core phone system with call manager and call routers; some sip and some analog. One of the remote states uses our call manager/unity. I do not know how to identify or locat…

728 views

Hi,
I'm looking to see if it's possible to swap out my analog phone with a Cisco IP Phone (E.g. Cisco 8851). I have a home office and only have a analog phone line coming in through Time warner cable…

846 views
Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

I am using Cisco UCM 10.5 and would like to assign two 7936 Polycom units to the same extension and to be used simultaneously in a large conference room.  

Is this possible with my current system?

333 views

We recently purchase a company and they have some old eFax numbers I want to port out to https://www.ringcentral.com, but eFax said I cannot since their https://en.efax.com/CustomerAgreement states th…

144 views

When a client is using Lync/Skype soft phones and Lync/Skype PBX for voice - what kind of QoS needs to be configured on the corporate network to assure prompt delivery of those real time packets? With…

448 views

We moved our Asterisk server version 1.4.31 from one network to another.  When my phones are on the new LAN, they register to the server just as I would expect.  When I try to connect from outside the…

1449 views

Hi there,

I need to know who is the "REAL" SIP trunk provider.

So, I have a SIP trunk provider, that him self, use a provider, that use a provider, that use a provider and then BOOM, the use THE…

2092 views

Hi there,

Can you please explain to me what are the relations between the FreePBX Bind Port and the custom port field in the extension itself?

My assumed understanding is that when the Bind Port…

349 views

I currently have CUCM 9.1.2 and Unity Connection 9.1.2 installed in a retirement community.  I currently provide phones, VM, and  autoattendent to the business side of the organization.  We are going …

654 views

I am having problem with my CISCO IP phone 7940 Series when I go to the configuration page trying to save IP manually the save option is inactive .

1047 views

Along with our Cisco 4331 ISR I received a few white cardboard envelopes marked
Unified Border Element Enterprise License - 5 sessions. When I look at the
paper inside I don't see a serial number o…

456 views
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We are in the process of deploying Skype for business to our infrastructure.
the question that came up was which method of call processing is preferable and what are the pro's and cons of each or of u…

974 views

We have an older 3Com NBX V3000 Analog phone system and today, we've been having some issues where the user inside the office can hear the caller just fine, but the caller outside the office is unable…

544 views

I'm working with a Cisco UC520 phone system and have been having issues with call transfers to 2 extensions. If someone calls the main number from the outside and requests to be transferred to either …

783 views

Hi there,

I have a voice prompt issue with my Asterix (Elastix).

When I make an outbound call to a number that does not exist, instead of prompting "no-longer-in-service.gsm" it prompts "all-cir…

1745 views

I had this question after viewing skype auto redial (https://www.experts-exchange.com/questions/28795479/skype-auto-redial.html).


I want a simple program that will attempt a busy number 60 times. Mo…

384 views

Have a call center/answering service with 150 lines.  our VOIP phone equipment is in our office.  it sucks, call quality not that great, and i can't do half the things i was quoted.  looking to move t…

667 views
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