User manual POLYCOM VIU-323

[. . . ] VIU-323 Terminal Adapter User Guide P/N 61421-00005 Rev A Notice © 2000 RADVision Ltd. All intellectual property rights in this publication are owned by RADVision Ltd. and are protected by United States copyright laws, other applicable copyright laws and international treaty provisions. No part of this publication may be reproduced in any form whatsoever or used to make any derivative work without prior written approval by RADVision Ltd. [. . . ] If it's the same as the first, don't dial it. then you don't have to change the bandwidth. You must, however, dial: 6-2 Basic Dialing Example 80 7654321* Where 80 is the gateway service prefix, 7654321 is the phone number for both the first and second channels of the unit you are calling, and * is the 2nd number delimiter. (You don't have to dial the phone number twice because the phone numbers are the same for both channels. ) Example 80 7654321*7654322 Where 80 is the gateway service prefix, 7654321 is the phone number of the first channel of the unit you are calling, * is the 2nd number delimiter, and 7654322 is the phone number of the second channel. or dial: 80 7654321*2 Where the delimiter * is followed by the digits of the second number that differ from the first number dialed, in this case the number 2. Note: Since it is not common that the default outgoing bandwidth of a VIU-323 is 2x64 Kbps, you will probably have to change the outgoing bandwidth. Dialing Through a Gateway and IMUX When you are dialing through a gateway and an IMUX to a unit that has the same bandwidth as the calling VIU-323, dial: !The gateway's service prefix, followed by The IMUX profile, followed by The phone number of the receiving unit; if this is a 2x64 Kbps call, this will be !If the second channel phone number is different from the first, you dial the digits of that number that differ from the first number after the 2nd number delimiter. If it's the same as the first, don't dial it. 6-3 Making Calls with the VIU-323 Example 80 #001 7654321* Where 80 is the gateway service prefix, #001 is the IMUX profile, 7654321 is the phone number for both the first and second channels of the unit you are calling and * is the 2nd number delimiter. (You don't have to dial the phone number twice because the phone numbers are the same for both channels. ) Dialing Through Two Gateways to a Remote LAN Endpoint When you are dialing through a second gateway to an H. 323 endpoint on a remote LAN, if: !You are making a BRI call, and The default bandwidth of the calling VIU-323 is 2x64 Kbps, and The default bandwidth of the receiving unit is also 2x64, The gateway's service prefix, followed by The remote gateway's phone number; then When you are prompted by an IVR message (for example), dial the extension of the remote endpoint followed by a hash mark then you don't have to change the bandwidth. You must, however, dial: Example 80 7654321 (IVR prompt) 6666 # Where 80 is the gateway service prefix, 7654321 is the phone number of the second gateway, and 6666 is the extension of the remote unit. Note: Since it is not common that the default outgoing bandwidth of a VIU-323 is 2x64 Kbps, you will probably have to change the outgoing bandwidth. Similarly, it is also uncommon that the bandwidth of an H. 323 device is 2x64 Kbps, so you will probably have to change the incoming bandwidth. Changing Outgoing Bandwidth When you make a call, it is transmitted from the calling VIU-323 at the default outgoing bandwidth, which is set during VIU-323 configuration; however, if the endpoint you are calling is set to a different bandwidth, or if you must go through a gateway which requires a different bandwidth, you can change the default bandwidth of the calling VIU-323 by adding a prefix to the dialing stream. 6-4 Changing Outgoing Bandwidth Why Change the Default Outgoing Bandwidth? To make a call, the bandwidth of the calling VIU-323 must match that of the called endpoint. When default settings do not match, you can force a change in the bandwidth of the calling VIU-323. When the bandwidth of the receiving unit differs from the bandwidth of the calling VIU-323. When the bandwidths of the two units are the same, but to get through the gateway, the bandwidth must be changed. When you are calling another VIU-323 and high bandwidth is not available--during peak calling hours, for example. Note: When dialing from one VIU-323 to another, you can change the incoming bandwidth of the VIU-323 that is receiving your call by adding a dialing suffix How to Change the Bandwidth Add the prefix before the dialing stream to force a change in the bandwidth of the VIU-323 that is calling. The following table displays the prefixes that you dial to force a change in the outgoing bandwidth (note the difference between prefixes for non-restricted and restricted bandwidths): To Force Calling Bandwidth to: 2 x 64 Kbps (2B) 128 Kbps 256 Kbps 384 Kbps 768 Kbps 2 x 56 Kbps (2B) (restricted) 112 Kbps (restricted) 224 Kbps (restricted) 336 Kbps (restricted) 672 Kbps (restricted) Use Prefix: #00 #10 #20 #30 #70 #01 #11 #21 #31 #71 6-5 Making Calls with the VIU-323 Dialing Examples Note: The default outgoing and incoming bandwidths are the same and are referred to below as "default bandwidth. " Dialing within a LAN When the calling VIU-323 is set to 384 Kbps and the receiving unit is set to 128 Kbps, dial: !The endpoint's phone number. Example #10 3333 Where #10 is the prefix that forces the calling VIU-323's bandwidth to 128 Kbps and 3333 is the extension of the receiving endpoint. Dialing from a VIU-323 on a LAN through a Gateway (BRI) to an H. 320 terminal When the calling VIU-323 is set to 384 Kbps but the call is sent at 2x64 Kbps through the gateway to the remote H. 320 terminal, dial: !The gateway service prefix, followed by The first channel phone number, followed by The 2nd number delimiter; If the second channel phone number is different from the first, you dial the digits of that number that differ from the first number after the 2nd number delimiter (see example below). If it's the same as the first, don't dial it. Example #00 80 7654321* Where #00 is the dialing prefix, 80 is the gateway service prefix, 7654321 is the phone number for both the first and second channels of the unit you are calling, and * is the 2nd number delimiter. (You don't have to dial the phone number twice because the phone numbers are the same for both channels. ) 6-6 Changing Incoming Bandwidth Example #00 80 7654321*7654322 Where #00 is the dialing prefix, 80 is the gateway service prefix, 7654321 is the phone number of the first channel of the unit you are calling, * is the 2nd number delimiter, and 7654322 is the phone number of the second channel. [. . . ] If the device whose IP address you pinged is connected, it replies with a confirmation. packet-switched Networks that break up a message into smaller packets before switching the packets to their required destination. Each packet contains a destination address so all packets in a single message do not have to travel by the same path. The destination computer reassembles the packets back into their proper sequence. [. . . ]