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Questions tagged [telephony]

Telephony is the science of translating sound into electrical signals, transmitting them, and then converting them back to sound; that is, the science of telephones. The term is used frequently to refer to computer hardware and software that performs functions traditionally performed by telephone equipment. For example, telephony software can combine with your modem to turn your computer into a sophisticated answering service.

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Asterisk dialplan several apps simultaneously

I am designing an Asterisk 11 Dialplan for a call center. I am facing a problem in dialplan. In order to achieve the desired configuration , i think it is necessary to run 2 applications at the same time at some point in the…
Sir.pOpE
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how do I route Asterisk dials from serverA to serverB?

I'm trying to make an Asterisk server connect to a SIP provider (which offers PSTN origination and termination). I've been reading the great Definitive Guide, but am having a conceptual problem with this illustration: Once Asterisk has determined…
Thufir
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Asterisk call should be with peer, but gets trapped and stays local

I'm working with Asterisk and Vicidial, trying to place outbound calls through a SIP "trunking" provider. The calls never connect, instead I hear either demo-instruct.gsm or invalid.gsm playing from Asterisk. I replaced the phone number with…
Thufir
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Does SIP offer a mechanism to initiate a stream and returning an error?

Imagine you are browsing to a HTTP URL that does not exists. You'll get a 404 which often contains an explanatory body. Now imagine you are calling someone using VoIP with SIP and use a non-existent addressee. Is it possible to return an error AND…
bot47
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Call duration limit & least cost routing

We have Elastix version 2.4 setup and we have some little questions which if you could please answer to solve via web based panel of Elastix, as agents are making calls via Elastix there are little issues we are having, like: Agents make very long…
Fari
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route incoming asterisk sip calls - fake auth rejected

we are trying to handle incoming sip_calls on our asterisk server, but somehow we always end up getting either 403 or 603 (which should be the same?) what should happen if it works: user calls service number -> remote asterisk accepts call from pstn…
longbow
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Bad CentOS server performance with Digium T1/E1 TDM Card

I have a PowerEdge 2850 server that used to work well under CentOS 5 i386. It was used with Asterisk as a telephony server, hooked up to the world via a T1 line. I've since wiped it and installed CentOS 6 x86_64, and everything works well as long as…
Kuba hasn't forgotten Monica
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Dial-A-Something Service on Generic Hosted Machine

I would like to set up a phone service that provides automated information to users who dial a number on an ordinary telephone - think "Dial-A-Joke" or something similar ("press 1 for this, press 2 for that, ..." and then the system reads off…
Douglas Squirrel
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Which handsets work with IP DECT base?

My workplace uses an Ascom IP DECT base station (IPBS1), and Ascom handsets as well. We're looking to replace some broken handsets. The ones by Ascom, however, are rather expensive, and we're not altogether satisfied with their quality. I've been…
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Can a "4 line" Grandstream GXP 2000 handle 8 lines?

We have a whole bunch of GXP 2000 phones here but now we're growing too big for just 4 incoming lines. We use Trixbox (asterisk) for the phone system with 4 analog lines coming into a Dell server. Is there a way that these Grandstream GXP 2000…
Matt
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Lync 2010 Standard Server Collocation

I'm planning out a new Lync 2010 deployment (mixed with Office 365 E4, completely replacing a legacy PBX system), and am getting a bit confused with some of the docs that MS provides. The company I'm building this for is very lightweight - only 50…
jwegner
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How to pass/process extension numbers while calling Freeswitch from outside SIP gateway?

Suppose I have Freeswitch, which has SIP gateway configured. So, the local users of this Freeswitch can call outside via
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How do I change outside access number from 8 to 9 in Cisco UCM?

I want to change my outside access number from 8 to 9 in Cisco Unified Communications Manager. I've copied all of my 9.x route patterns to create a duplicate set of 8.x route patterns. When I try to dial an outside number using (i.e.…
Rob D.
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How to segregate network devices between several T1s and a Cable connection?

So, I'm working on setting up a call center. Our outbound calls will be going to an off-site dialer so they'll be going over the internet as data (VoIP?). Then we have our customer service department, which will be, well, whatever they do... My…
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Avaya 9630 for SIP

Is there any way to make the 9630 Desktop Headset work just as a SIP IP telephone, without the extensive need for additional Avaya equipment. All of our infrastructure is Cisco and we may receive about 80 Avaya deivces and I am wondering if they…
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