are able to supply new and reconditioned telephone systems from
Panasonic, British Telecom and Teldat Elmeg
(formally Funkwerk Elmeg).
We are happy to take
over support for telephone systems from most major manufactures on a
pay-as-you-go basis. We are happy to look at your current lease
and maintenance agreements and advise you on what equipment you have,
have much it is costing you and the way forward to reduce costs.
We are an independent
company - we do not sell telephone lines or calls - so our advise is
unbiased. We have a proven track record of saving companies
money on their telecoms by identifying mis-charging and replacing
expensive leased equipment with the equivalent or better reconditioned
systems when a lease is due for re-newal.
We can supply new and
reconditioned equipment from full telephone systems, with up to 64
extensions, to expansion cards and additional hand sets for existing
Many of our existing
clients use us to support both their computer systems, their Internet
connections and their telephone systems - this simplifies their
Please contact us by
email or on
(01323) 525 915 with any telecoms requirements or enquires.
The current prices for
Teldat Elmeg telephone systems can be found here.
Fixed line and Voice
over IP (VoIP)
Fixed line telephone
systems use analogue or ISDN lines supplied by a telecoms provider to
make and receive calls. The maximum number of active calls is
fixed by the number of lines attached to the system. ISDN2 lines
allow two simultaneous calls, while ISDN30 lines carry 8 - 30 calls,
depending on the number of channels purchased. An analogue line
carries only one call.
ISDN and analogue lines can be combined to provide multiple lines on a
single number. Further, ISDN lines can support more then pne
number to provide, for example, direct dial in numbers to extensions
in addition to the main company number. However, you
cannot have more then one line for an analogue line that has been
activated for broadband or fibre Internet connection (although you can
have it as one of the lines in your telephone switch, with a unique
Digital Workshops can
advise you on the best combination of telephones lines for your
company and manage ordering and installation of fixed line
Voice over IP can be used
to make calls via your Internet connection. At some point, the VoIP call must break out from the Internet onto the normal public
telephone line, either to receive calls from a non-VoIP caller or to
call a non-VoIP destination number. You therefore need a
supplier who will do this for you - Digital Workshops can work with
you to select the best VoIP provider for your company.
A telephone system use
SIP trunks to carry VoIP calls between you and your telecoms provider.
You can think of a SIP trunk as the equivalent of a telephone line.
The advantage of SIP trunks is that they can be added or removed from
the system easily - to add a SIP trunk does not need a telecoms
engineer to come in and install a telephone line.
truck suppliers will provide you with a telephone number for incoming
VoIP calls. You can also make VoIP to VoIP calls, if the party
you are calling also has VoIP.
To support SIP trunks
your telephone system, you will need a SIP trunk card. Many
modern telephone systems already have these built in. Most
telephone systems will support a combination of fixed lines and SIP
trunks - if you loose your Internet connection, and do not have fixed
lines then you loose your ability to make and receive calls.
An extension of VoIP is
to do away with the telephone system all together and use an Internet
based virtual switchboard. You use a IP telephone that supports
SIP as an extension on a virtual Internet based telecoms provider via
your Internet connection. You can have as many extensions as you
require - in this case you pay a monthly per seat fee for each extension.
The virtual switchboard will support all the facilities you want, such
as voice mail, call forwarding etc.
The disadvantage of
using a VoIP provider against a fixed line provider is usually the
cost of the calls for outgoing calls. Instead, a mixture of the
two is best - fixed line for outgoing and SIP trucks for incoming.
VoIP in the office
and for out-workers
telephones and soft telephones (computer program SIP telephones) can
be used as replacements for traditional telephones handsets.
These devices can share the computer cabling instead of requiring a
separate connection to a telephone switch.
Out workers can also
use VoIP telephones as extensions off the telephone switch, connected
to the switch over the Internet. In this case, a site-to-site
VPN can be employed to encrypt and protect telephone link.
The telephone switch
requires one SIP 'socket' for each attached telephone (just like it
needs one extension port per traditional telephone extension).