Questions tagged [pstn]

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7
votes
3answers
3k views

Connecting to an analog dial-in PSTN terminal without a PSTN line

there's a computer ("server") that has no Internet connection, and it is located in a place with no GSM signal. The only way to get connection to it is an analog modem (US Robotics 56Kbit/s). This ...
6
votes
1answer
2k views

Elastix(Asterisk) Slow to repsond on incoming PSTN line

I setup a PBX with asterisk and Elastix as a web GUI. I have all incoming calls set to ring to a ring group of our office personnel in a ringall format. The only issue is the time for Asterisk to ...
4
votes
4answers
2k views

What does “non-IP” originated traffic mean in a TOS?

I am looking at VoIP providers and many of them have a part of their TOS that says they don't allow "non-IP originated traffic." Excerpt from TOS: You shall only send to [DELETED COMPANY NAME] ...
4
votes
1answer
2k views

Asterisk isn't playing recording attachted to IVR

I've setup an IVR to pickup up incoming calls to allow them to enter an extension or press one to be dropped into the ring group for our office. The only issue is Asterisk isn't playing the WAV/MP3/...
4
votes
2answers
6k views

PSTN Trunk TDM400P Install on Asterisk / Trixbox

I'm trying to get a TDM400P card with FXO module to connect to our PSTN line. The card is correctly detected by Linux: [trixbox1.localdomain asterisk]# lspci 00:09.0 Communication controller: ...
4
votes
1answer
117 views

Redirect Call Back Out To PSTN

I'm wondering if it's possible on a VoIP system (specifically Asterisk) over SIP trunks to redirect a call back out to the PSTN to no longer be routed through the PBX. What I'd like to do is see ...
3
votes
1answer
258 views

Asterisk: Got 2 PSTN numbers, want to go IP. Need a card

I'm familiar with Networking, VoIP, Asterisk and Linux... but I've never deployed a VoIP with PSTN. I've got one week to deploy VoIP + 2 PSTN numbers, I don't mind reading like crazy but I would like ...
1
vote
1answer
144 views

SIP me@domain.com vs (123) 456-7890

I'm trying to understand SIP, and one thing that keeps confusing me is phone numbers and dialing plans vs SIP URI's like me@domain.com. What is the difference? How do they coexist/work together? For ...
1
vote
2answers
580 views

Cheap Solution for Routing a Toll Free Number to a Standard POTS Number

I do some technical work for an Internet Radio Show/Podcast, and need to fix something that has been broken for a while. The hosts have a Skype-In number to take listener calls, and for convenience ...
1
vote
1answer
7k views

Asterisk: Unable to create channel of type 'DAHDI' (cause 34 - Circuit/channel congestion)

Strange issue started with our Asterisk install yesterday. When dialling out via ISDN BRI the call fails and the following error is logged: Unable to create channel of type 'DAHDI' (cause 34 - ...
0
votes
2answers
290 views

Intra-office PBX using analog phone lines

My office is planning to have an intra-office software-based intercom system. As USB phones are costly, is it possible to do them with analog phones (connecting to RJ-11) instead? The phones won't ...
0
votes
0answers
135 views

Switch from E1 to Analog PSTN line on IP-PBX failure

I have two Asterisk servers, E1(PRI) Gateway Asterisk 1.4 with E1(PRI) card IP-PBX Asterisk 1.8 on VM Server When my e1 gateway is failed (ex. shutdown, no power...), PSTN automatically switch to ...
0
votes
2answers
283 views

routing calls from landline to end user cell phones

I have to setup a server to route telephone calls coming to a particular landline no to cell phone phones depending upon the availability of user. I want to know what technology call centres or ...
-1
votes
1answer
40 views

PSTN and Internet [closed]

Where Is Physical Wires Exist for Internet Is It Using PSTN Wires for Transferring Data? If both are different network then How Telecom Companies Are Providing Internet Facility?
-2
votes
1answer
302 views

Cheap PSTN Card with caller Id for Asterisk Linux server [closed]

For my house I just wanted to setup a caller Id system that would auto-reply on certain callers to avoid harements. Any sugestion for this? I'm thinking on a Linux + Asterisk + PSTN Card with caller ...