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Do you work with IP Telephony?


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Old 30-12-2011, 13:17
Mike_1101
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I will soon be going to an interview for an administrative job with a company providing IP telephone services to businesses. The company have said they may want me to get involved with the technical aspects of this work at a later date.

The company describe this as follows:-
"We support and maintain phone systems for businesses throughout the UK and beyond, mostly by remote computer access and remote reprogramming.

All applicants must have computer programming skills and some knowledge of telephony would be advantageous. Training will be given to the successful applicant who has shown he or she has the basic skills and is comfortable using them
".

Would this involve knowledge of a programming language such as Java and also acquiring skills with Cisco equipment (routers & switches etc)?

I understand the basics of how IP telephony works and am now trying to get an idea of what this kind of work would involve.

Thanks
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Old 07-01-2012, 20:41
sean2003
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I work in the VoIP industry.

It's likely the systems have simple web interfaces for making changes or are done via quite simple config files.

Asterisk based systems are often used, search Trixbox for a downloadable IP PBX system you can play with.
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Old 07-01-2012, 22:14
Mike_1101
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OK I'll have a look - thanks
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Old 07-01-2012, 22:36
42dragonfly
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How involved it gets depends on what IP phones you use on what data kit.

If you have Cisco IP phones on a Cisco Data network then it's (relatively) simple; so long as you set up your QoS (Quality of Service) on the bits of the network your voice traffic routes through, the Cisco IP phones mark all of their voice packets correctly. If the Cisco kit is a bit older then you might have to dig a bit deeper in to managing your traffic appropriately.

However if your using IP phones that don't mark their voice packets properly, then your could be in for a lot of trial and error....

The Cisco side of things will be basically configuring switches and routers, probably using the CLI (command line interface) using a PC and telnet client. a basic understanding of Cisco IOS commands would be a good place to start if you've never had any exprience of these systems.

And remember: it's always a network fault - even when it's not.....

42
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Old 15-01-2012, 19:16
SuperHet
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And you expect the OP to gain these CCNA skills in time for his interview? Good luck with that.

I think a basic knowledge of IPT might help (i.e what is a voice gateway, an ATA, SIP protocol, MAC Address, TFTP process, LDAP, basics of a router and a switch, IP Addressing).
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