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What should be considered when deciding between Avaya and Cisco?
What should be considered when deciding between Avaya and Cisco?
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What to consider before implementing a VoIP network
What are important recommendations for enterprises to consider before implementing VoIP?
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Will VoIP telephones work successfully in a small LAN?
In this expert response, learn how VoIP telephones work in a smaller LAN.
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How do NAT Traversal and STUN work?
This expert response defines NAT Traversal and STUN and details problems encountered with SIP.
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VoIP pros and cons
VoIP pros and cons
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A comparison and description of SIP and H.323
Both SIP and H.323 can be used as signalling protocols in IP networks, but is one superior to another? SearchVoIP.com expert Carrie Higbie answers this user-submitted question.
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We're opening a remote office -- should we get a new vendor who offers local support and SIP instead
We're opening a remote office -- should we get a new vendor who offers local support and SIP instead of H.323?
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Do service providers use SIP or H.323 to communicate between their VoIP networks?
Do service providers use SIP and/or H.323 to communicate between their VoIP networks? I know that most of them use SIP for access to their customers.
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How to set up a simple VoIP network on an existing LAN
Setting up a VoIP network on an existing LAN requires some IP PBX familiarity. Learn how to implement your new VoIP network with this expert response.
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Do I need DDNS to access my PC?
I use Suse Linux Desktop 10.0 with a public IP address. Do I need Dynamic DNS (DDNS) to access my PC from the local LAN or WAN?
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How do we fix 'echo', 'static' and background noise on our new VoIP system?
Our organization has just implemented a VoIP system on 40 - 50 test phones. However, our users have been complaining of echo, static and amplified background noise during phone usage. The noise ca...
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How many user agents can participate in a SIP or H.323 conference?
How many user agents (both clients and server) can participate in a SIP conference? And how many in an H.323 conference?
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VoIP over wireless
How do I get VoIP or a softphone to work with wireless Internet?
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Can I test MGCP loopback capabilities without buying the equipment?
I'm researching ways to test MGCP and Real-Time Control Protocol (RTCP) in my VoIP network environment and do not see many options without spending a lot of money to buy simulators and such equipme...
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How do I use VoIP through the PSTN without using a softswitch?
I want to know the steps needed for having VoIP ability on a campus network that could work with PSTN without using a softswitch. What components are required?
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Follow-up to Can I bypass the PSTN with my current router/gateway setup?
You mentioned on an answer to a previous question which was follows: "If I have an E1 PRI ISDN GSM gateway (VCL-GSM E1 PRI-30), DX 2030 (Digital E1 VoIP router/gateway Quintum and Internet access o...
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How do I know when dropped calls happen because of my equipment or my service?
I use BroadVoice and it drops my calls on every other call without warning. Is there a problem with my equipment or an issue with the service? I checked with SpeakEasy and the upload is usually bet...
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Can I set up a VoIP network infrastructure over broadband Internet?
Is setting up a VoIP network infrastructure over broadband Internet similar to setting it up at WAN level in organizations?
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Traffic logging and VoIP encryption
For best practices, what traffic logging should be performed at firewalls? Is there an encryption for Voice over IP -- for example, to protect traffic from snooping on Internet?
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How can I resolve a compatibility issue between our VocalTec gateways and our carrier's Cisco gatewa
We are using VocalTec gateways as originating gateways and our carrier uses Cisco for terminating gateways. But they must use some higher version Cisco IOS, as there seems to be a compatibility pro...
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Can you mix different unified communications solutions?
It is possible to mix different unified communications solutions to fit your needs, says UC expert Jon Arnold.
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What is a call park phone feature and how does it work?
UC expert, Matt Brunk, explains a call park phone feature, how it works and how it compares to a visual call park feature in this expert response.
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What drivers are funding the growth of video platforms?
There are four drivers that are spurring video interest and funding the procurement of video platforms, says Nemertes Research's Irwin Lazar.
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