Expert Knowledgebase
Emerging Wireless Technologies (including VoIP) with Carrie Higbie
VoIP advantages
(21 JUN 2004)
Can you tell me what advantages VoIP will give me with my present set up - one building only, no other sites and at present very low telephone costs (i.e. outgoing traffic, etc.)
Starting PC to phone business
(21 JUN 2004)
I was wondering if you could point me to the right direction. If I want to start a PC to phone company where do I start? What do I need to keep in mind in terms of investment and people?
Any help would be gre...
When is H.323 or SIP used?
(21 JUN 2004)
When is H.323 or SIP used? Is it used just for IP telephony (IP phones and gatekeeper/call managers) or also with VoIP (I.E. regular phones to routers to WAN)?
Establish VoIP from my home DSL line
(21 JUN 2004)
I like to know if I am able to establish VoIP from my home DSL line. If I can than what equipment would I need to do that and what might it cost. I would be waiting for your reply very anxiously.
Voice over Frame Relay
(21 JUN 2004)
What are the main differences between VoFR and VoIP?
Connecting different types of PBXs together
(21 JUN 2004)
Let's say a prospect has branch offices around the world and wants to implement VoIP to cut toll charges for international calls and conferences; But, the existing PBXs in different countries have different Ven...
VoIP card that uses the SIP protocol
(21 JUN 2004)
Is there a VoIP card that uses the SIP protocol that can be used to plug a standard phone line into a standalone PC? Can you give me some tips for searching the Web to find these cards? I have found the VIC car...
Where can I learn more about VoIP
(21 JUN 2004)
We are in the process of deploying VoIP and I am looking for detailed information on the technology. Can you recommend a starting point?
Mid-range VoIP phones
(21 JUN 2004)
We are a small company with 10 stores. Our stores are going to be linked with cable or DSL, in an effort to create a WAN having a computer in each store, and a main computer at Headquarters. I can't justify bu...
What are the advantages and disadvantages between VoIP and TDMoIP?
(21 JUN 2004)
What are the advantages and disadvantages between VoIP and TDMoIP?
What is NFS?
(21 JUN 2004)
What is NFS and how is it different from normal file system?
Network solution for new calling card business
(21 JUN 2004)
I'm software engineer and my background is in application programming. We are looking to start a business making calling cards. We want to start as a mid-range provider, and as our traffic goes higher we're g...
Call analysis
(21 JUN 2004)
Which parameters should I take into consideration when I calculate the bandwidth of a channel that supports 10 calls simultaneously, using codec G.729b (VAD)?
Are there benefits to using VoIP over ATM and frame relay?
(21 JUN 2004)
Can you tell me if I use VOIP in a situation where ATM and frame relay are already used as WAN protocol with pvc too, will there be much benefit to my company? My company has many organization around the world ...
If the codec G.729 bit rate is 8 kbps, does it mean one way or two ways?
(21 JUN 2004)
If the codec G.729 bit rate is 8 kbps, does it mean one way or two ways?
How does VoIP technology differ from Voice and Data Convergence technology?
(21 JUN 2004)
How does VoIP technology differ from Voice and Data Convergence technology?
Jitter troubleshooting
(21 JUN 2004)
I have a 64 kbps leased line on which data as well as voice travels. The data traffic is http and mail. When a voice session is activated and as soon as the latency reaches above 250 the voice breaks or jitter...
Is anyone producing an adapter to convert PBX to VoIP?
(21 JUN 2004)
I am a construction manager doing work on a local campus that is using VoIP. First of all I think it's a great idea. It does present an issue in regards to security however. We are building new parking structur...
How well does VoIP work with serial voice radio signal using push to talk (PTT) technology over long haul circuits with encryption?
(21 JUN 2004)
How well does VoIP work with serial voice radio signal using push to talk (PTT) technology over long haul circuits with encryption? Are there any problems with signal loss or delays due to timing issue with th...
Can I connect a branch office to VoIP services at headquarters over a wireless network?
(21 JUN 2004)
Can I connect a branch office to VoIP services at headquarters over a wireless network? What hardware would be required for this to work?
What does VoIP and switch services have to do with provisioning or toll free provisioning?
(21 JUN 2004)
What does VoIP and switch services have to do with provisioning or toll free provisioning?
What does ASR% mean?
(21 JUN 2004)
What does ASR% mean?
What types of encryption are available for VoIP?
(21 JUN 2004)
What types of encryption are available for VoIP?
How is voice bandwidth traffic calculated?
(21 JUN 2004)
For the purpose of sizing a WAN, and using a given codec (eg: G.711) -- how does one convert peak minutes of circuit switched voice traffic into Mbps for VoIP?
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I have CRTP enabled – does it affect voice quality?
(21 JUN 2004)
I have CRTP enabled on my router because of low bandwidth. In "show interface summary" I see OQD (pkts dropped from output queue.) Is this affecting voice quality?
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