Recent IT Questions

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Microsoft OCS SIP and VOIP audio codes mp-124 issues

we are in a Microsoft OCS SIP and VOIP environment. we are having a couple of issues with our unit.  #1- out bound calls to the PSTN will auto disconnect after approx. 60 seconds. calls to OCS or VOIP phone numbers have no problems. #2- Inbound calls do not ring the analog phone; however,...

Answer Question   |  Sep 24 2009  2:43 PM GMT
Microsoft OCS, SIP, VoIP
asked by ITKE

  10045 pts.

Switchvox AA350

I have a switchvox AA350 SMB server in my organization which I run. Recently I aquired analog lines for external calls. I put two of the lines into the switchvox (the server came with a four port anolg card)I configured the lines and I was able to make calls through my SIP phones.Yesterday I came...

asked by Bchika

  45 pts.

P2P SIP

hi. I SIP implemented in Peer to Peer under I wanted to use windows(visual C++).Under its Linux site in the existing www.p2psip.org but i need something like that but under use windows.please you guide me to hurry. by.

Answer Question   |  Apr 28 2009  4:17 AM GMT
VoIP, SIP, P2P
asked by Zahrad84

  5 pts.

sip attacks

I want to test SIP vulnerabilities using Sipp Message generating tool. i have XML files for generating messages. I have sipp running. But i am not able to execute below command. Run sipp with embedded server (uas) scenario: # ./sipp -sn uas Can i get any help. Thank you Regards Sindhu

View Answer   |  Apr 24 2009  3:53 AM GMT
SIP, Network security, SIP Attacks
asked by Sindhukakuru

  30 pts.

testing SIP vulnerabilities

I want to prove SIP vulnerabilities using SiVuS (The VoIp vulnerability scanner ) tool. The test Bed contains Asterisk server and two xlite clients. When Two xlite clients are registered with server. I am able to Remove their registrations from server by generating REGISTER SIP messages using...

View Answer   |  Apr 24 2009  3:43 AM GMT
SIP, VoIP, Sivus
asked by Sindhukakuru

  30 pts.

AudioCode MP-114 for modem use

How do I configure a port on an AudioCodes sip device to handle a analog modem?

Answer Question   |  Mar 25 2009  5:16 PM GMT
AudioCodes, SIP, Modems
asked by Kwsammy

  5 pts.

Convert PSTN to SIP to use cell phone as cordless phone

dear All, I’m all new to VoIP and telephony in general and don't know the correct terminology...probably someone else already posted my questions in another thread but I managed to confuse the search engine with my query terms. Anyways... Basically I have a PSTN telephone line on which an ADSL...

View Answer   |  Mar 10 2009  9:56 PM GMT
VoIP, SIP, PSTN
asked by Adpiga

  5 pts.

Cisco UC520 integration with Nortel PBX

We have one site having Cisco UC520 for IP telephony and another site we have nortel PBX. So is it possible to integrate both ? if yes then how and which features will work and which will not work ?? It would be great if someone help me out for the same.

View Answer   |  Mar 1 2009  6:36 AM GMT
Cisco UC520, Nortel PBX, Unified Communications
asked by Nimit

  5 pts.

Difference between Cisco CallManager and SIP server

Hi There, Anybody can help me to know the difference between Callmanager and SIP server? Call processing difference.. and protocols used. Thanks and regards, Shaju

View Answer   |  Feb 24 2009  4:49 AM GMT
Cisco Unified CallManager, SIP, Cisco CallManager
asked by CiscoNW

  5 pts.

SIP tags

Is a UAS required to use the same To: tag in a 487 response as was used in the 180/187. Scenario: A user INVITES B, B sends 183 (with To: tag filled in), then user A CANCELS B, B sends 487 with different To: tag

View Answer   |  Feb 4 2009  10:07 PM GMT
SIP, UAS
asked by Vocaljerell

  15 pts.

Whats the difference between SIP UA and SIP Account

I'm registering my SIP UA (sipua1@192.168.1.2) with a proxy (asterisk). Asterisk has dial plans and when a call comes into one of the numbers it is forwarded to my UA as 1234@192.168.1.2. My application is an IVR that is supposed to handle multiple numbers like (1234, 4321 etc.). The IT guys...

View Answer   |  Feb 4 2009  5:02 PM GMT
SIP, Multiplexers, SIP UA
asked by Alikyu

  5 pts.

SIP for contact centers

What is the benefit (business and technical) of SIP for a contact center?

View Answer   |  Jan 26 2009  5:20 PM GMT
SIP, Contact centers
asked by MikeM

  5 pts.

How to configure SIP server in Cisco 3660 router?

I'm not able to configure SIP server in Cisco 3660 router (IOS is 12.4T). Can anyone please tell me how? Thank you.

View Answer   |  Dec 11 2008  7:51 PM GMT
Routers, SIP, Router configuration
asked by NetworkingATE

  1405 pts.

Connect a Innovaphone product to a Nortel CS 1000 5.5.12 with SIP

I would like to setup a Innovaphone IP302 between a KIRK1500 DECT system and a Nortel CS1000 version 5.5.12 with SIP The communication between the Kirk1500 and the IP302 is OK The connection between the IP302 and the CS1000 is the problem! I receive the message forbidden on the CS1000, when I...

Answer Question   |  Nov 22 2008  9:09 AM GMT
Nortel, SIP, Telecom
asked by Sunep

  5 pts.

Are there any large scale SIP based analog/IP converters out there?

We are deploying a large scale VoIP system based on Asterisk and SIP, but some of our warehouses want to keep using the existing analog phones. Are there any large scale SIP based analog/IP converters out there? Or should we be looking for a different approach?

View Answer   |  Oct 23 2008  3:16 PM GMT
VoIP, SIP, Analog to digital converters
asked by Unified Communications ATE

  140 pts.

SIP resource allocation?

Hello, I am looking for expert advise on dynamic resource allocation in VoIP... I am trying to come up with some idea for using of dynamic badwidth adaptations for SIP teleconferencing in mobile wireless net? Would it be possible to use RTCP messagas to communicate resource availability ( bandwidth...

View Answer   |  Sep 27 2008  11:48 AM GMT
SIP, RTCP, VoIP resource allocation
asked by Vl

  5 pts.

SIP: URIs & AORs

What is the difference between a SIP AOR and a SIP URI?

Answer Question   |  Sep 16 2008  8:18 AM GMT
SIP, URI, AoR
asked by Alexsamson

  5 pts.

Integrating CTI applications

We are working to expand the Phone system to enterprise level over an existing MLPS network using SIP to integrate 5 different CTI applications. Would like mix of vendor neutral and vendor-specific content. This request for help was originally submitted to the Research Assistant on WhatIs.com.

Answer Question   |  Sep 3 2008  4:09 PM GMT
MPLS, SIP, Research Assistant
asked by ResearchAssistant

  855 pts.

SIP as Proxy and B2BUA?

Can SIP act as both a Proxy and B2BUA? If so, what type of calls require Porxy, and what type require B2BUA?

Answer Question   |  Sep 2 2008  7:12 PM GMT
SIP, Unified Communications, VoIP protocols
asked by Unified Communications ATE

  140 pts.

I'm searching for a large scale SIP based analog/IP convertor

We are deploying a large scale VoIP system (+/- 5000 phones), based on Asterisk and SIP. In some of our warehouses we want to keep using the existing analog phones. We have 2 options (that we know of) to connect these analog phones to our VoIP system: 1) Linksys SPA2102 analog/IP convertor ...

Answer Question   |  Jul 9 2008  8:21 AM GMT
SIP, Analog to digital converters, VoIP hardware
asked by Johan Leroy

  5 pts.

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