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USER’S MANUAL
Section 5: GUIDED TOUR of the MENUS 98
c
COMPATIBILITY TIP!
Not all codecs support all sample rates. 32kHz is most commonly supported in MPEG Layer-
3, whereas 48kHz is more commonly used in Layer-2.
24kHz is sometimes seen in Layer-2. In this case, set your Transmit or Receive to “L2
Half/24” and this Sample Rate will be used (regardless of the Sample Rate setting) 16kHz is
used with G.722 and is automatically employed whenever G.722 is used.
Z
ZEPHYR CLASSIC VS XSTREAM COMPARISON!
Note: Not all Zephyrs support MPEG Layer-2. Very early units support MPEG Layer-3 and
G.722 only.
The Zephyr and Zephyr Express do not support MPEG Layer-2 at the 32kHz Sample Rate.
When communicating with a Zephyr or Zephyr Express in Layer-2, the 48 kHz sample rate
should be used.
CODEC - Screen 3
Athirdpressofthe<CODEC>buttonshowsthescreenabove.
TheCompatibilityoptiononthisscreenchangestheformatofthedatausedtotransmitLayer3
overISDNforcompatibilitywithsomethird‐partycodecs.YoushouldleavethissettingatZephyr
unlessyouareexperiencingthisparticularincompati
bility.