Using E.164 Numbers or H.323 IDs
When you deploy your H.323 network, you must identify endpoints and
gateways either by E.164 numbers (telephone numbers) or H.323 IDs
(text strings). Cisco’s implementation requires H.323 IDs use an e-mail
address format (user@company.com).
Designing & Planning…
Continued
142 Chapter 5 • Voice and Video Gatekeeper Design
Using Bandwidth Limits in Your Network
As discussed earlier, one of the most useful features of a gatekeeper is bandwidth
control—being able to efficiently utilize your WAN bandwidth while leaving
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While the latter format may seem appealing, since each of your
users will have a unique e-mail address, in practice it is rarely used.
Commonly E.164 addressing is used in H.323 networks. One reason is
people are used to dialing E.164 numbers for voice and video calls, not
e-mail addresses. Another reason is E.164 addressing typically leads to a
more organized, hierarchical addressing system. Most companies
already have a telephone addressing system in place. You can configure
your H.323 similarly to your existing dialing plan. For example if your
company uses four-digit telephone extensions, your existing and H.323
dialing plan might look like that shown in Table 5.2.