The future of ISDN?
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Posted by on July 27, 2006, 2:33 pm
Please log in for more thread options I am new to this group, but it seems to be the proper forum for my needs. I am a studio installer specializing in studios for Voice Over artists. Currently, the VO industry of promos relies almost exclusively on ISDN technology to transceive Mpeg codec data, using devices such as the Telos Zephyr. This has been the standard for almost ten years now, and everyone has been happy with the sound quality and reliability. HOWEVER, as I setup more new studios, getting ISDN service installed is becoming more and more difficult. Verizon has "grandfathered' current ISDN subscribers but will no longer setup new ISDN service in some areas. There is technology using IP available, but the idea of having to go through several switches reduces reliability considerably, especially with the number of users growing so rapidly. Is there a chance that there might be and ISDN 2.0 in development? Or is there another existing technology that could considered as reliable as ISDN? Thanks everyone... George Whittam eldorec.com | ||||||||||||||||||||||
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Posted by Phil McKerracher on July 27, 2006, 2:43 pm
Please log in for more thread options There's no direct successor to ISDN in sight. For a while it looked as if it might be ATM (asynchronous transfer mode) but these days it's all about packets (maybe ethernet) delivered by various means (copper, cable, fibre, wireless...). If you really want reliability between defined locations you can get it at a price, in the form of digital leased lines (delivered as SDSL or whatever). Another way is having several redundant standard low-cost broadband connections from different suppliers, if available. -- Phil McKerracher www.mckerracher.org | ||||||||||||||||||||||
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Posted by EventHelix.com on July 30, 2006, 9:36 am
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> Is there a chance that there might be and ISDN 2.0
> in development? Or is there another existing technology that could > considered as reliable as ISDN? You might be better of switching over completely to an IP based network. If you get a highspeed connection like Verizon FiOS, it might meet your reliability requirements. There are standards like MPLS for a more reliable transfer but I am not sure how extensively they will be deployed in the IP backbone. -- EventStudio System Designer 2.5 - http://www.EventHelix.com/EventStudio Telecom System Design and Call Flow Modeling Tool | ||||||||||||||||||||||
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Posted by Robert Bonomi on July 30, 2006, 9:57 am
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>I am new to this group, but it seems to be the proper forum for my
>needs. I am a studio installer specializing in studios for Voice Over >artists. Currently, the VO industry of promos relies almost >exclusively on ISDN technology to transceive Mpeg codec data, using >devices such as the Telos Zephyr. This has been the standard for >almost ten years now, and everyone has been happy with the sound >quality and reliability. HOWEVER, as I setup more new studios, getting >ISDN service installed is becoming more and more difficult. Verizon >has "grandfathered' current ISDN subscribers but will no longer setup >new ISDN service in some areas. There is technology using IP >available, but the idea of having to go through several switches >reduces reliability considerably, especially with the number of users >growing so rapidly. Is there a chance that there might be and ISDN 2.0 >in development? Or is there another existing technology that could >considered as reliable as ISDN? Well, in the U.S., ISDN is alive and well, while also being 'moribund, if not fatally injured'. In other parts of the world, ISDN is the service of choice. Speaking only about the U.S.A. (and, to a degree, Canada) -- Single-line ISDN -- aka ISDN "BRI" (2B+D) -- *is*, for all practical purposes dead. Trunk-line ISDN -- aka ISDN 'PRI' (23B+D) -- is significantly different. The 'alternate' technology is called "digital entrance" service. This requires that there be a 'switch' on the customer premises, to handle the digital line from the telco, and communicate with the user devices (phone handsets, or their equivalent). "Digital entrance" comes in several forms, 'ISDN PRI' being one of them. Also there is DS-0/DS-1, with either D4 or 'extended super-frame' formatting. Some telcos are even offering 'native' VoIP support. Now, with the 'switch' playing traffic cop (and translator) on the telco trunks, one can use 'whatever one damn well pleases as the protocol between the phone set and the switch. A number of the larger swith manufacturers use 'slightly bastardized' variants of ISDn for their hand-set comm. Northern Telecom, for example, uses very ISDN-ish protocols for talking to their handsets. I believe current versions of the switch software allow use of other manufacturer devices 'behind' their switch. ISDN BRI _is_ alive and well -- and flourishing -- in *this* environment. Just not as a 'telco offering for 'basic' service. So, what you'll need to do for the future is: 0) 'justify' a need for 23 or 24 phone lines. (or some multiple thereof) 1) get a PBX that accepts 'digital entrance' from the telco 2) make sure it 'speaks' standard ISDN on the 'phones' side. 3) continue to use your TELOS ZEPHYR (or equivalent) gear. | ||||||||||||||||||||||
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> in development? Or is there another existing technology that could
> considered as reliable as ISDN?