I got a problem. remote sites can video call me on ISDN but when i try and call them my link speed drops from 384k to 64k, and phone just rings, no answer. they dont even see my calls coming through to them. when they call me i get connected at 320k even though we bot have 384 (3x64k ISDN lines) Calling any where using IP on the same system is fine.
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When you use the internet you are using a connection to your ISP (Internet Service Provider) over some kind of line whether it is a phone line using a modem or a cable for a cable modem. ISDN is just another way that you connect to the internet.
ISDN stands for Integrated Services Digital Network. ISDN is a digital phone connection system and is often used to give you higher and more reliable service. So, what they mean is to call your phone company and ask them to check your line, that is all they mean. Remember, the Internet itself is just a huge set of connections using an unbelievable number of types of connectivity from phone lines to space based relays and how you get there is through whatever line you have set up between you and your ISP. Does that help?
Name: AT&T MMS Homepage: http://mmsc.mobile.attwireless.net Gateway IP: 10.250.250.55 Port 1: 8080 Domain 1: blank Service Type 1: HTTP Gateway IP 2: 000.000.000.000 Port 2: 0 Domain 2: blank Service Type 2 WAP DNS 1: 000.000.000.000 DNS 2: 000.000.000.000 Time out: 5 Minutes CSD no 1: Blank Username: 1: blank Password 1: blank Speed (Bps) 9600 Line Type 1: ISDN CSD no 2: blank User Name 2: blank Password 2 blank Speed (Bps) 2: 9600 Line Type 2: ISDN GPRS APN: proxy User Name:blank Password:blank Should be same for internet to work. post again if not.
How many lines (circuits) do you have going to your system? Is it possible they are out of order? Give me your ISDN numbers and I'll try to connect to you. Where are you located? My e-mail address is firstname.lastname@example.org
Please confirm if you have made video call or audio call. There is an option in the called basic mode, if it is enabled then disable and check. ckeck with service provider for the bonding option. Last option you can try SW upgrade
The short answer is.... It is a T-1 Router/Firewall that works with ISDN and Frame Relay. It uses the V.35 and BRI interfaces and requires an external CSU/DSU. It is NOT compatable with Cable or DSL internet service providers.
A network architecture is a set of standards for how computers are
physically connected and how signals are passed between hosts. Some typical
network architectures are described in the table below. Network ArchitectureDescription
Ethernet is a wired networking standard and is the most common networking
architecture used in LANs (both in business and home networks).
Dial-up networking is a common way to connect a computer (often your home
computer) to a remote network, such as the Internet or a business network. A
modem on each computer uses the phone lines to send and receive data.
DSL (Digital Subscriber Line)
DSL is a fast-growing alternative to dial-up networking to connect to the
Internet. DSL uses regular phone lines to send digital broadband signals.
ISDN (Integrated Services Digital Network)
ISDN is another alternative to traditional dial-up that can be used to
connect to the Internet or to directly communicate with another computer
connected to the ISDN network. ISDN is more common in Europe than in the U.S.
ISDN can use regular telephone wiring, but must be connected to a special ISDN
Wireless networking uses radio waves or infrared light (with the air as the
transmission medium) to send data between hosts. Wireless networks are common in
homes, businesses, airports, and hotels. Most wireless networks connect into
larger wired networks (such as LANs) which are in turn connected to the
Communication between hosts on a network generally takes one of three
Simplex--one-way communication from a sender to a receiver.
Half-duplex--two-way communication between two hosts. Communication only
travels in one direction at a time.
Duplex--two-way communication between hosts. Communication can travel in
both directions simultaneously.
The user manual or user guide of the 660R-D1 is available on the zyxel.com site, if you go into the following path: Support and downloads --> download library ---> up at the right hand side top you see a drop down menu with list of products, choose 660R Compact series. This brings you to the download page and you can choose out Model :
P-660R-D1 Version :
3.40 Language :
English OS :
N/A Release Date :
07-14-2006 Size :
Citating the part from the manual that I think is important (see down at the bottom of this post the speeds, and the note that it may be influenced by your ISP standard. Ask your ISP what they use.):
The ZyXEL Device is an ADSL2+ gateway that allows super-fast internet access over analog (POTS) or digital (ISDN) telephone lines (depending on your model). In the ZyXEL Device product name, "R" denotes an integrated router and "D" denotes a chip set standard. Your ZyXEL Device product name ends with a number. Models ending in "1", for example P660R-D1, a denote a device that works over the analog telephone system, POTS (plain old telephone service). Models ending in "3" denote a device that works over ISDN (Integrated Services Digital Network). Models ending in "7" denote a device that works over T-ISDN (UR-2)
The DSL RJ-11 (ADSL over POTS models) or RJ-45 (ADSL over ISDN models) connects to your ADSL-enabled telephone line. The ZyXEL Device is compatible with the ADSL/ADSL2/ADSL2+ standards. Maximum data rates attainable for each standard are shown in the next table:
Note: if your ZyXEL Device does not support Annex M, the max ADSL2/2+ upstream data rate is 1,2Mbps. ZyXEL Devices which work over ISDN do not support Annex M. The standard your ISP supports determines the maximum upstream and downstream speeds attainable. Actual speeds attained also depend on the distance from your ISP, line quality etc.
Please let me know if the above answered your question:)