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September 2000
This release note describes the new features and caveats for the Cisco IP/VC 3520 Gateway version 2.0 and embedded gatekeeper version 2.0. Use this release note in conjunction with the Cisco IP/VC 3520 Gateway User Guide Version 2.0.
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Note If you are upgrading a gateway, please refer to the upgrade notes that come with the upgrade software also. The upgrade notes provide installation and configuration information that is not available in the Cisco IP/VC 3520 Gateway User Guide or in these release notes. |
For regulatory and compliance information on the Cisco IP/VC 3520 Gateway, refer to the Regulatory Compliance and Safety Information for Cisco IP/VC 3500 Series document.
To access and configure the Cisco IP/VC 3520 Gateway version 2.0 gateway, you must install Cisco IP/VC Configuration Utility version 1.8.6 or later.
The following sections list the new features in the Cisco IP/VC 3520 Gateway version 2.0.
This feature allows a gateway to automatically register its services with the H.323 version 2-compliant gatekeeper with which the gateway is registered.
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Note Autoregistration of services is not supported by the Cisco IP/VC embedded gatekeeper. |
This feature allows you to bond the B channels in a BRI module for high capacity calls. You can bond the two channels in each module and you can bond the modules to create capacities of 128 kbps, 256 kbps, and 384 kbps.
This feature allows the gateway to dial all B channels of a bonded call simultaneously.
The bandwidth capacity of the V.35 ports has been expanded to 768 kbps.
High-speed T.120 support has been added for videoconference calls using
224 kbps and higher. Up to 70.4 kbps of the call capacity can be used for
T.120 data.
LAN endpoints that use NetMeeting, LiveLAN, or VCON-Quick Connect v1.4 cannot initiate T.120 sessions. The endpoints can participate in T.120 sessions that are initiated on the WAN.
The number of incoming call routing methods you have enabled can affect the time required for a call to get through to the recipient.
If you are using a LiveLAN system, you may experience problems because of the inability of the LiveLAN system to tolerate opening and closing of channels.
Table 1 lists and describes caveats that are resolved in version 2.0 of the Cisco IP/VC 3520 Gateway.
| DDTS Number | Summary | Explanation |
|---|---|---|
CSCds01817 | Polycom does not disconnect call leg. Polycom dialing into the gateway fails to properly disconnect the telephone line after the user hangs up. | Contact your Polycom representative about upgrading the Polycom software. |
CSCdp31544 | Gateways, MCU, and VTA operating system configuration does not accept Enter key. | Fixed. |
Table 2 describes possible unexpected behavior by the Cisco IP/VC 3520 Gateway.
| DDTS Number | Description |
|---|---|
CSCdr20273 | Flow control problem between IP/VC MCU and H.320 endpoints. When an IP/VC MCU is used to manage a multipoint conference that includes H.323 and H.320 endpoints, the H.323 endpoints can send more data through the IP/VC gateway than the H.320 endpoints can process. Workaround: Verify that all gateways participating in the call have the same audio transcoding capability. |
CDCdr21308 | Interoperability issue between Cisco MCM and IP/VC embedded gatekeepers. Endpoints registered to an IP/VC embedded-gatekeeper zone cannot use services provided by IP/VC MCUs and gateways registered to an MCM gatekeeper zone. Workaround: Setup the network so that the MCUs and gateways register with the embedded gatekeeper. Terminals can register with either gatekeeper. |
CSCdr33008 | Multiple IP/VC gateways cannot register the same service prefix with the MCM. IP/VC gateways register service prefixes in the MCM gatekeeper as E.164 addresses. Registering a service prefix with a second gateway creates duplicate E.164 addresses, which can confuse the MCM. Workaround: Make sure all service prefixes are unique and not subsets. For instance, 88 and 89 are unique, 88 and 889 |
CSCdp85654 | Second B channel does not bond (WAN-to-LAN) in the first call after a reset. After the gateway is reset, the second channel in a 2B call does not bond when Polycom terminals are used. Workaround: Redial the number. |
CSCdr92684 | Entering illegal numbers in subnet mask causes unit to lock up. Workaround: Contact Cisco technical support, obtain an RMA, and return the unit. |
This section contains the latest documentation updates for version 2.0 of the Cisco IP/VC 3520 Gateway. This update includes any changes or late-breaking information that occurred after production of the gateway and information that was omitted from the Cisco IP/VC 3520 Gateway User Guide Version 2.0.
The following sections identify and correct errors that appear in the Cisco IP/VC 3520 Gateway User Guide Version 2.0.
Table 3 corrects statements that are known to be incorrect in the Cisco IP/VC 3520 Gateway User Guide Version 2.0. The table lists the page where the error is found, the original statement, and the correction.
| Page Number | Current Statement | Correction |
|---|---|---|
A-1 | The Cisco IP/VC 3520 Gateway version 2.0 gateway can automatically register with gatekeepers that are H.320 version 2-compliant. | The Cisco IP/VC 3520 Gateway must register with a gatekeeper on the network. The Cisco IP/VC 3520 Gateway version 2 unit can automatically register the services it supports with H.323 version 2 gatekeepers. |
The following sections provide information about the Cisco IP/VC embedded gatekeeper version 2.0.
The following sections list the new features in the version 2.0 embedded gatekeeper.
This feature allows the embedded gatekeeper to connect to the proxy in the Cisco Multimedia Conference Manager (MCM). The proxy can provide quality of service (QoS) and firewall functions.
This H.323 feature provides a mechanism by which an endpoint can identify gatekeepers that it can register with.
You must manually register endpoints that use NetMeeting version 2.x and earlier with the embedded gatekeeper. These versions of NetMeeting do not support automatic gatekeeper registration.
Table 4 lists and describe caveats that are resolved in Cisco embedded gatekeeper version 2.0.
| DDTS Number | Summary | Explanation |
|---|---|---|
CSCdp21042 | Embedded gatekeeper does not work with Cisco MCM proxy. | Fixed. |
CSCdp81231 | If the zone prefix of the embedded gatekeeper is configured and enabled, the Cisco MCM cannot access the embedded gatekeeper to use a service. The MCM can only access and use embedded gatekeeper services when a zone prefix for the embedded gatekeeper is not used. | Duplicates CSCdp21308. |
Table 5 describes possible unexpected behavior by the embedded gatekeeper.
| DDTS Number | Description |
|---|---|
CSCdp21308 | Interoperability issues between Cisco MCM and IP/VC embedded gatekeeper. Endpoints registered to an IP/VC embedded-gatekeeper zone cannot use services provided by IP/VC MCUs and gateways registered to an MCM gatekeeper zone. Workaround: Setup the network so that the MCUs and gateways register with the embedded gatekeeper. Terminals can register with either gatekeeper. |
This section contains the latest documentation updates for version 2.0 of the Cisco IP/VC embedded gatekeeper. This update includes any changes or late-breaking information that occurred after production of the embedded gatekeeper and information that was omitted from the Cisco IP/VC 3520 Gateway User Guide Version 2.0.
The Cisco IP/VC Configuration Utility allows you to configure the gatekeeper separately from the gateway. This section describes how to save embedded gatekeeper configuration parameters.
To save a configuration table, perform the following steps:
Step 2 Log in to the Cisco IP/VC 3520 Gateway that has the gatekeeper parameters you want to save.
Step 3 Click Gatekeeper in the Configuration Source window.
Step 4 Click the application parameter configuration you want to save.
Step 5 Set the parameters as you want to save them in the table.
Step 6 Click Save. The Save As window appears.
Step 7 In the File name field, enter a name for the file you want to save. A predefined file extension is automatically applied for the gatekeeper parameter table you are saving. The extension for each gatekeeper parameter table is as follows:
Step 8 Click Save.
This section identifies and corrects known errors that appear in the Cisco IP/VC 3520 Gateway User Guide Version 2.0.
Table 6 identifies and corrects statements that are known to be incorrect. The table lists the page where the error is found, the original statement, and the correction.
| Page Number | Current Statement | Correction |
|---|---|---|
B-27 | Step 10: At the prompt, type h323 qos <ip-prec | rsvp> and press Enter. | Step 10: At the prompt, type ip-prec | rsvp and press Enter. |
Use these release notes in conjunction with the following documents:
For service and support, contact Cisco Technical Assistance Center (TAC) at:
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This document is to be used in conjunction with the Cisco IP/VC 3520 Gateway User Gukde Version 2.0 publication.
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Posted: Tue Sep 26 08:14:22 PDT 2000
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