
Chapter 1 Introduction | |
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VLAN Support
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802.1D Tag Protocol Type
(802.1QTagType)
user_priority | 0 |
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| VID | |
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| CFI = |
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8 | 6 | 5 | 4 | 1 | 8 | 1 |
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| VLAN ID |
Figure 1-8. VLAN Tag Format
UDP Support
Table 1-2. UDP Source Port as Destination Voice Port
Field Length (Bits) | Field Description | Value |
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2 bytes | UDP Source Port* | 2 – 497d |
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2 bytes | UDP Destination Port | 2142d |
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* – The MSB of this field can be either 1 or 0 for inband
Note The UDP Source Port field is used for destination voice bundle indication. For example, if the destination is:
Bundle 1 – 02, Bundle 2 – 03, Bundle 3 – 04, Bundle 4 – 05, etc.
For more information about VLAN tagging, see IEEE Std 802.1 p&q.
Ethernet Main Link
10/100BaseT main link receives Ethernet frames from the voice modules via the Ethernet switch and forwards them to the remote device over the IP network. The 10/100BaseT main link of
E1/T1 Main Link
When using E1/T1 main link,
The E1/T1 links operate with loopback timing by deriving clock from the device connected to its E1/T1 port or with internal clock provided by the
Functional Description |