Zephyr Xstream FAQs


Can the Zephyr Xstream be remote controlled?

Yes. All the menu functions of the Xstream can be accessed with an ethernet connection between a PC and the Xstream, using Internet Explorer, or another compatible browser.

Do I need to enter the MSN/DN numbers below the SPID numbers in my Zephyr Xstream?

Yes. The (silver) Zephyr Xstream uses a different ISDN stack then the original (black) Zephyr. The Zephyr Xstream requires both the SPID numbers and the DN (directory numbers) to be entered. These directory numbers are normally just the 7-digit phone numbers that can be extracted from the SPID numbers. For example the DN for this SPID "21678193100101" would be "7819310". Please note that the Zephyr Xstream will need to be rebooted whenever changes to the SPID or DN numbers have been made.

What sort of ISDN line should I order for use with my Zephyr Xstream?

To keep things easy, all Telos products that use ISDN use the same ISDN provisioning. In simple terms, what’s needed is a “dumb” ISDN BRI line, 2B+D, with most of the “automatic” services turned off. We recommend that you check your Telos product’s user manual for further details – there is a section (usually toward the back of the manual) that specifies what kind of provisioning needs to be ordered for an ISDN line. That section will instruct you on exactly how to request provisioning from your line provider. You can even scan and send these manual pages to your telephone company!

I cannot hear any send audio from the front panel headphone jack on my studio’s Zephyr Xstream. What’s up?

On the rack-mount Zephyr Xstream, the front panel headphone jack provides monitoring for incoming (receive) audio only. Only the Zephyr Xstream MXP, with the built-in mixer, allows switchable and adjustable local and remote monitoring simultaneously.

I entered the SPIDs on my Zephyr Xstream, as provided by the telephone company, but can not receive incoming calls on line 2.

Most likely, if the line is OK, there is no number entered into the MSN/DN field in the TEL menu. Rectify this and you should be up and running.

I have my Zephyr Xstream’s receive codec set to Auto (Search). Why does it take almost a minute for my incoming audio to lock?

The Zephyr Xstream is "searching" for a match to the incoming data stream. It works from a look-up table, and may take 30 or more seconds to find the “match” and sync up. Telos recommends that the Auto (Search) function only be used when the incoming stream's encoding algorithm is unknown

Is the Zephyr Xstream able to be used outside of the USA?

Yes. The power input accepts mains voltages between 100 and 264 volts at 50 to 60 Hz. The ISDN "U" input is used in North America, and the "S" input is used in most other parts of the world. The ethernet connection is standard world wide.

Can I send and receive audio between my Z/IP ONE and my Zephyr Xstream using the SIP method?

Partially. You will be able to establish a connection, and the Z/IP ONE will decode audio from the Zephyr Xstream, but the Xstream will not decode audio from the Z/IP. If you still wish to do this, you’ll need to place your Zephyr Xstream in the “SIP” interface mode (see the Codec menu for this setting). Set your Xstream’s encode/decode mode to AAC, preferably 128 kbps mono or stereo. On the Z/IP ONE side, set it for MP2-AAC coding. Note that this procedure will only work if your Z/IP ONE is NOT registered with a SIP server, since the Zephyr Xstream is not SIP capable and will not receive calls routed through SIP servers.



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