Expert Knowledgebase
Emerging Wireless Technologies (including VoIP) with Carrie Higbie
What is involved in setting up a local area network?
(10 FEB 2005)
What is involved in setting up a local area network?
What is the best way to handle SIP phones at a location employing NAT (like a wireless router on a broadband connection)?
(10 FEB 2005)
What is the best way to handle SIP phones at a location employing NAT (like a wireless router on a broadband connection)?
What is the difference between T-KIP and C-KIP?
(10 FEB 2005)
What is the difference between T-KIP and C-KIP?
What is the difference between winproxy and a router? What is the function of each?
(10 FEB 2005)
What is the difference between winproxy and a router? What is the function of each?
Why doesn't my Cisco AS5300 cut-off calls when the client's balance reaches zero?
(10 FEB 2005)
I have a Cisco AS5300 configured for my telephony VoIP live traffic. I have AAA being done by the router. However, when a call is made, the AS5300 does not cut the calls when the credit balance reaches zero (i....
Could you explain how to improve network performance through Direct Memory Access, Shared Memory Adapter, Bus Mastering and On-Board Processor?
(10 FEB 2005)
Could you explain how to improve network performance through Direct Memory Access, Shared Memory Adapter, Bus Mastering and On-Board Processor?
How can I set up my Cisco 3620 for Auto Attendant?
(10 FEB 2005)
I have a Cisco 3620, which I use for study. I have configured it as a Gateway/Gatekeeper. I have a voice card on it. At my work place, we have an AS5350, which we use as a Gateway and it runs an IVR, which is l...
Is shielded twisted pair cable categorized just like unshielded twisted pair cable?
(10 FEB 2005)
Is shielded twisted pair cable categorized just like unshielded twisted pair cable? Like CAT1 to CAT7?
Troubleshooting fading calls
(21 JUN 2004)
My VoIP calls are fading and dropping. Where should I start to troubleshoot this problem?
Voice over frame relay vs. VoIP
(21 JUN 2004)
Our main transport between offices is via frame relay. In a situation where a company would link 10-20 PBX's and not use IP phones, is there an advantage of to voice over frame relay versus voice over IP?
How does voice travel over IP, if IP is not connection oriented?
(21 JUN 2004)
How is it possible to send voice over IP if IP is a connectionless protocol?
Inmarsat services
(21 JUN 2004)
Where can we get information about Inmarsat services?
What could be the cause of our interruptions?
(21 JUN 2004)
Hi Ted, We are installing a test over IP but the communication has many interruptions when we are talking, we have a Hipath 1500 connecting a PBX Hicom 3000, and the routers are Cisco.
Reference material for VoIP
(21 JUN 2004)
Hi Ted,
Can you suggest any good reference material for VoIP?
When does latency become an issue to the flow of voice traffic?
(21 JUN 2004)
We are decommissioning Newbridge MUXs and tie lines and redirecting voice traffic from existing PBXs to a Cisco VG200 and across leased lines (T1 or E1) that incorporate existing Expand compressors and Cylink e...
Dedicate 2xDS-0 to go to another service
(21 JUN 2004)
If a site has a T1 pointed to a frame cloud, and they are using 128/256 (CIR/Port), can they use the other channels for VoIP?
Thanks!
Matt
VoIP products
(21 JUN 2004)
What is the most powerful VoIP product in the present market?
Video conference through satellite
(21 JUN 2004)
Can video conferencing be carried out through a satellite system?
Desktop videoconferencing
(21 JUN 2004)
What is the different between the desktop videoconference and videoconference? Can I make a desktop conference between 20 people on one channel at the same time?
Rating a VoIP router solution vs. single board solution
(21 JUN 2004)
All things being equal, how do you rate a VoIP router solution (say AS5300) vs. a single board solution like Dialogic dm/ip0821a?
Is VoIP using public Internet as secure as PSTN?
(21 JUN 2004)
Is VoIP using the public Internet as secure as the PSTN?
What are the advantages and disadvantages of IP telephony
(21 JUN 2004)
What are the advantages and disadvantages of IP telephony?
VoIP traversing over a VPN
(21 JUN 2004)
Can I use VoIP to traverse over VPN?
Phone company 'cloud'
(21 JUN 2004)
What is a phone company cloud? What functions and features does it have? Who
are the providers and do you know what price they charge?
Connection oriented link
(21 JUN 2004)
How exactly is connection - oriented link made since packets from the transport layer (TCP) should go through the IP, which is connectionless?
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