Installation | Sirrix Aktiengesellschaft

When I plug the ISDN RJ45 cable into a Sirrix.PCI4S0 port I do not get the link up (green light down) What is the problem?

For connecting a TE port, you need to use the crossed cables. The TX and RX wire pairs must be exchanged: pin 3 with pin 4 and pin 5 with pin 6. Two crossed cables are provided with each card. For connecting a NT port, you need a straight 1:1 cable and you should set the terminating resistors. See the data sheet for wiring details.

Can I install multiple Sirrix.PCI cards in the same computer?

Yes, see srx-pci/README.pcm for detailed instructions.

Where can I get information regarding the configuration and installation of the Sirrix.PCI?

Information regarding the configuration and installation of the Sirrix.PCI can be found in the following files of the driver package: srx-pci/README.install and srx-pci/README.config.
Further information can be found on the following websites:
www.asterisk.org
www.ip-phone-forum.de
www.voip-info.org

I have a TA that needs power provided by the NT. Is there a way for the Sirrix.PCI4S0 to provide power?

Usually TAs (terminal adapters for providing analogue ports) are self-powered as they need AC power for ringing voltages. The PCI4S0 can provide power with a 40V power supply (Sirrix.PS40V-A). Simply connect the power supply to the "POWER-40V" connector on the Sirrix.PCI4S0. Up to 20 ISDN phones can be powered by one power supply.

The Sirrix.PCI4S0 port-LED does switch on, although it seems to blink at a very fast rate instead of being constantly on. Is this normal?

A flashing LED indicated some problem on the S0 wires. Did you connect terminating resistors (100 Ohms)? You can either enable them on the card directly or by installing them somewhere "on the cable". Furthermore, for connecting a TE port you need to use a crossed cable. For connecting a NT port use a straight 1:1 cable. Do not connect two NT ports to the same bus.

I am purchasing a Sirrix.PCI card for use with Asterisk. I can't seem to find any documentation or drivers for the card. Where do I find documentation and drivers?

Documentation is available in the driver package (README.config) and in the VoIP-info WIKI. Information about the hardware is available in the datasheet, available on our website. The driver package is shipped together with the Sirrix.PCI4S0 hardware. If you need the software earlier, please ask our support team by e-mail: support (at) sirrix (dot) com

How can I install additional packages needed for Trixbox?

1) yum install kernel-devel.i686 (kernel headers)
2) yum install asterisk-devel

The command modprobe sirrix_pfic fails. What is the problem?

There are several possible reasons for this.
1) The card is not correctly installed in the system.
2) Some new mainboards using PCI-X need a firmware upgrade for the card.
Please contact our support team by e-mail for obtaining the download link to the update CD-ROM: support (at) sirrix (dot) com
3) If the LED D9 is flashing there is probably a hardware error.
For checking LED numbers you can download the datasheet here.

How can I upgrade the Firmware?

You can upgrade the firmware by using an update CD-ROM. Please contact our support team by e-mail for obtaining the download link: support (at) sirrix (dot) com

Where do I find the latest drivers for the Sirrix.PCI4S0 card?

The drivers can be requested from our support team by support (at) sirrix (dot) com

Do I always have to power the bus?

No, you only need to put 40V on the bus if you have terminal endpoints that don't have an own power supply (e. g. phones).

Do you have a product that can 'convert' an ISDN BRI (NT mode) port to two analog lines (each one answering a different MSN)?

Yes, we also sell "ISDN a/b Adapters" / Terminal Adapters (TAs, as they are called in Germany). These can be requested and ordered by e-mail: sales (at) sirrix (dot) com

I can't seem to find any kind of jumper map for your card. Do you have some kind of document describing this issue?

Yes, it's contained in the data sheet.

In which scenarios do I need to use a 100 Ohm termination on a BRI port ?

On each S0-bus you need at least one 100 Ohm termination. If you connect a port of the Sirrix.PCI4S0 to the public network as TE, the NT of the public network usually already has 100 Ohm terminators, do not set the terminator on the Sirrix.PCI4S0 then. If you want to connect phone to a Sirrix.PCI4S0 port in NT mode, you should set the 100 Ohm terminator on the Sirrix.PCI4S0. This document describes the different cabling types.

I want to run the spans in TE mode. Are there any jumpers that I need set on the cards to achieve this?

The ports of the Sirrix.PCI cards are configured by software(sirrix.conf, also see www.voip-info.org for details). Sirrix.PCI4S0 ports are hardware-wired for connecting as NT, so you need to use a crossed cable to connect as TE. Each Sirrix.PCI4S0 is delivered with two crossed cables. The ports of the Sirrix.PCI2E1 can be wired as NT or TE by jumpers.
See the data sheets for details.

Is it possible to hook up for example 2 ISDN phones to a single port of your BRI card configured as NT, PtMP? How can this be done?

It is possible, but only with the Sirrix.PCI4S0. You can either take a simple RJ45 distributor with 1:1 wiring between two or more RJ45 plugs or build such a cable yourself (one RJ45 plug connected to two).

How many devices can be hooked up to a single NT port?

You may connect up to 8 TEs to one bus in PtMP mode (only possible with Sirrix.PCI4S0). In PtP mode only one device may be connected to one NT port.

How do I connect the Sirrix.PCI2E1 to the NTPM?

Please consult the documentation of the manufacturer for the pin assignment of the NTPM. See the data sheets for details on pin assignment of the PCI2E1. Connect the pins as follows:

NTPM	PCI2E1
S2M ab/b or TX+	RX+
S2M ab/a or TX-	RX-
S2M an/b or RX+	TX+
S2M an/a or RX-	TX-

How many devices can an NT power? Is it somehow limited by the power (x Watts all together) ?

The NT *may* (but does not need to) feed 40 V to the S0-bus. According to ETSI EN 300 012-1 (Layer 1 specification) up to 4 devices without own power supply (so devices that need to be powered over the bus) may be connected. Each device may consume up to 1 W. This means that usually the power supply gives 4 W on each bus. Therefore, the Sirrix.PCI4S0 limits the power on each port to 4 W (0,1 A). So you can connect our power supply Sirrix.PS40V-A (which gives up to 20 W / 0,5 A) to one ore more cards. The Sirrix.PS40V-A therefore can power up to 20 ISDN devices.