CNX Conference Bridge
Audio conference bridge for VoIP and conventional PBX environments
Frequently asked questions
Why does the CNX GUI interface take so long to load using Sun Java 1.5/5.0?
Sun's Java 1.5 (aka "5.0") has an issue where it can take a few minutes (over 8 minutes, for some people) to login to the CNX GUI. Also, during this wait, the CPU is running at 100%. This is caused by a known bug with Sun's Java.
The URL for Sun's bug report is:
http://bugs.sun.com/bugdatabase/view_bug.do;:WuuT?bug_id=6205422
This bug is fixed in Update 4 of Sun Java 1.5.
Does the CNX support H.323 signaling?
Yes, H.323 signaling is supported, as of version 1.2 of the CNX software.
How many participants does the CNX support?
Aastra CNX currently provides state-of-the-art call conferencing with four T1/E1 ports allowing up to 30 participants and 15 active conferences (30-port unit), and upgradable to 60 participants and 30 active conferences (60-port unit).
What languages does the Aastra CNX support in its prompts and web interface?
The Aastra CNX supports English for its voice prompts and web interfaces out of the box. Language Packs can be easily added via the CNX Graphical User Interface, and are available via the Aastra CNX Support website. Currently, Language Packs are available for British English, French (Canadian), and Spanish (Mexican). More languages will be available in future software releases.
The CNX supports up to two concurrent active languages, which are selectable via the GUI once the Language Packs are installed.
What PRI switch types does the Aastra CNX support?
The Aastra CNX supports the following ISDN PRI switch types for PBX and PSTN interconnection: ANSI National ISDN-2 (NI2), ETSI NET5, Nortel DMS-100 Custom, Lucent 5ESS Custom.
What pinout should I use for the Aastra CNX console cable?
The Aastra CNX uses a standard 9-pin null-modem cable, also known as a serial crossover cable, for connection to its console port:
| Signal Name |
DB-9 Pin |
|
DB-9 Pin |
|
| TD (Transmit Data) |
3 |
- |
2 |
RD |
| RD (Receive Data) |
2 |
- |
3 |
TD |
| RTS (Request To Send) |
7 |
- |
8 |
CTS |
| CTS (Clear To Send) |
8 |
- |
7 |
RTS |
| SG (Signal Ground) |
5 |
- |
5 |
SG |
| DSR (Data Set Ready) |
6 |
- |
4 |
DTR |
| CD (Carrier Detect) |
1 |
- |
4 |
DTR |
| DTR (Data Terminal Ready) |
4 |
- |
1 |
CD |
| DTR (Data Terminal Ready) |
4 |
- |
6 |
DSR |
Why is my CNX failing to register with my SIP Call Server?
On the Voice Over IP/SIP menu of the CNX GUI, make sure you Enable SIP, and also Enable the SIP registration field. In the Register field, enter your registration information using the following syntax: “username:password@domain.com” or “username:password@IP-Address”. Most SIP servers will use the extension for the username, and sometimes the password, but check with your specific server for details.
How many concurrent users does the CNX support?
With version 1.2 of the CNX software, the CNX can support up to 120 concurrent users, in up to 60 concurrent conferences. These users can be any mix of PRI, SIP, and H.323 callers. The CNX is available in 30-user, 60-user, and 120-user versions. The number of users enabled on a 30 or 60-user CNX can be upgraded using a License Key, available through your reseller.
How many PRI lines can a CNX use?
With version 1.2 of the CNX software, up to 4 PRI lines can be configured. This allows for up to 92 PRI callers to be supported. However, your CNX will only support up to the number of users allowed by your License Key; this means that you would need a 120-user CNX to support all 92 PRI callers at the same time. The remaining users could be SIP or H.323 callers.
What types of Authentication does the CNX Support?
The CNX can authenticate locally configured users, Windows Domain users, and NIS users.
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