IP Telephony

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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Cisco IP Phone 7941 still trying to upgrade.

Physically took phone to TFTP Server and uploaded current OS software to the phone.

Everthing in Call Manager looks good.

Cleared port security on the switch.

Phone daisy chained to PC.

PC has good Internet/Network connectivity.
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when I call Santander bank using skype
"welcome to skytel system"

but I can call using a cell phone

Please explain why you think I am blocked
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I am using Freepbx 13 and want to block outbound calls on 911 no only.
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Dear Experts,

I need recommendations of an Open Source telephone system Solution.

I need to let go of an old Cisco Unity Express. There is no budget for that office.

Is there a reliable product out there that I can set up in a Server machine?

Thank you
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The current Network setup is customer site connected one SIP trunk each in US and Europe respectively
over MPLS Network. The customer is asking for cross region resiliency in SIP Trunks, is it possible? I'm not sure
if inter continent trunking will cause any issues? Please provide pros and cons.
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Hi
Were experiencing issues with the Shoretel VoIP breaking up.
This is occurring predominately at one of our remote sites, however the main site is being affect, if slightly less.
Internal calls from the remote site to head office along with external calls are frequently causing problems.

Each site has 100/100mb link,
Shoretel switch at both sites.
Director and E1k and Ingate at main site,

Diffserve 467 enabled on HP POE switches
dedicated vlan for voice in place across the sites
sites connected by site to site VPN

Ideas?

Thanks
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Calling on all Cisco CUBE Experts;
CUBE setup for SIP trunking that that talks to the provider's SBC missing SIP port (5060) in the SIP URI, can anyone shine light on why it is happening? Is there a tweak or hack
someone can suggest ? The IP address is coming fine, BTW.

Thanks;
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Need to create a simple IVR (Interactive Voice Response) process on Linux.
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Any one has referred to any call center that can allow my way to make outbound calls including using my five 9 system? I need some one to use my auto dialer to contact my customers. Thanks
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We use five 9 for our main call center and we want to expand to another state but we just want to hire someone or company that take the inbound call and out bound call using five 9

Do u know any call call can do this?
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If I have a Skype for Business Online account  most folks reach me by a regular 10 digit telephone number.
But should people be able to reach me also at a sip address like sip://joebob@acme.com?
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Hi there,

I am looking for a partner portal which enables my company to organize and streamline questions and requests from partners. Moreover, things like static technical sales and technical information, ticketingsystem, partner status (level & training), onboarding process are very welcome. My company is active in the contact center industry where it sells its contact center solution through partners.

Any advice will be appreciated!

Kind regards,

Joep Vreeswijk
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Skype (Windows 10). The Video Button has disappeared from its position on right side top - alongside the telephone icon. Have tried for answers without success. What does this signify?
Has it anything to do with paying money.  It is not a problem with my computer, as I have opened the account on a second computer with same result.
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I need to firmware update a CISCO telephone (SPA 504G) to version 7.6.1
The problem is that the firmware update is needed to established as standalone.
Can i firmware update a CISCO telephone SPA504G standalone?
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related question/answer
https://www.experts-exchange.com/questions/29095322/2-phones-ring.html?anchor=a42537973¬ificationFollowed=206569166#a42538269

Using verizon wireless for residential (not business)
is there a way to have both phones ring at the same time

*71 is one phone and then the other
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I have an implementation of 3CX with soft phones . Recently i add also telephone (IP/VOIP) except of soft phone. the IP telephones are working properly but now  I need to export the contacts from the soft phone to IP telephone.

I am looking for a step by step instructions how to do it.
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could I have 2 incoming skype phone numbers

can I receive (not send) sms to skype united states phone number
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Hello,

Currently running Cisco UCM v11.5 and recently got in some new phones: 8861 series to be exact.

I need a template for this phone and was wondering if these were downloadable from cisco or what?

Thanks,
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Anyone knows if there is a way to change a hostname in Polycom SoundStation 7000?   So it would broadcast an actual hostname instead of the make/model name.
Easier to manage and troubleshoot.
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I have a client experiencing voice quality issues and their voice vendor is asking us to perform some Wireshark packet captures.  They have a Netgear GS724TPv2 PoE switch, which supports port mirroring, so according to NEC's instructions I mirrored the ports the PBX and IP phone are connected to and made the port my laptop is connected to the probe port.  I run the captures, making test phone calls from the IP phone, but NEC is saying the captures aren't showing any SIP traffic to/from the PBX and the IP phone.  

I don't run packet captures very often so I'm hoping an expert out there can confirm if the configuration I am running the captures in is correct?  Thanks in advance!
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Does COMCAST have poor quality phone service?

I switched yesterday from Verizon FIOS to COMCAST and had terrible telephone calls today on the land line.

I think we were sold >100 GPS upload speed. So, I doubt the poor quality is due to a slow internet connection. But maybe the old Verizon FIOS phone number was what they called a POTS line, a Plain Old Telephone Service line. Those were the ones where you cold hear pin drop.

Did I move from a POTS Line to an Internet based phone? And is that the cause of the major drop in quality?

My new modem is...

Xfinity
Dual Band Wifi
802.11.ac

The phone cable goes into the back.

Would an Internet phone do better?

Is there anything I can do?

I really despise having poor phone quality and may go back to Verizon to escape a bad connection.

Suggestions?

Thanks
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I have a network with Cisco Catalyst 2960X switches. We are rolling out a new phone system in phases. We want to keep the old system in place as we put in the new phones. To this end, we need multiple voice VLAN's. Another question on here pointed to a solution using MAC Authentication Bypass, but it did not give an example configuration. I am not familiar enough with the VoIP side to configure this, can someone please assist? (BTW, the other phone system is Allworx.)

https://www.experts-exchange.com/questions/29020081/Multiple-Voice-Vlans-on-Cisco-switch.html
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How does DHCP work with VoIP phones?  Do they phones need to get restarted every time the DHCP lease expires?  Or it works no different than a regular computer client?
For the first time phones need to be booted to obtain IP addresses.  Also when DHCP or DNS server changes.  What about a regular DHCP refresh at the end of the lease duration?
We use Polycom ip phones over poe.
Please advice.
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I want to make a Call Manager unavailable for CIPC registration. What services would I need
to shut down so that any CIPC that attempts to connect goes to the secondary in its
configured list of CUCM servers?
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I've been tasked with the possibility of upgrading our offices phone system.
Our current phone system runs off CAT3. Newer systems CAT5 or better. Our network is pretty old. I don't have CAT5 everywhere there is a phone and not even everywhere there's a computer. Those users end up on wifi. Anyway, from what I gather we can use a passthrough on the phones to connect the phone then the computer back to the network. We've got about 55 users and about the same amount of phones in our main office. Our plan was to also roll out VPN phones to multiple locations as we have jobsite trailers all over several states.

Is it advisable to use the passthrough on these phones? Or is having a dedicated line going to be significantly better? We also have a few places in the building where I've had to add a few small switched and I'm concerned we'll get some call degradation because of this.

Like I said, our network is a bit older and a lot of it has been band-aid fixes by adding some wifi AP's and daisy-chaining a few small switches in some areas for additional personnel over the years.

Personally I'd love to have our building rewired but I'm not totally sure it's necessary, however I don't want to cause more problems or increase load on a network that's barely adequate as it is.

If you need more info from my I'd happily provide it. I'd like some advice from anyone else who's done similar upgrades or implemented phone systems on current networks.


Thanks
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IP Telephony

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.