Integrators' Reference Manual for ViewStation EX, ViewStation FX, and VS4000
64
The PRI T1 needs to be provisioned for the ViewStation FX and
VS4000 systems as follows:
Table 3-4. ISDN PRI Requirements
Line settings
ESF/B8ZS (default)
Extended Super Frame B8ZS is modem standard for
T1/PRI line encoding and framing
Line termination
CPE (user side) only
type
The required termination is built into the system and
most access switches
Supported PRI
AT&T 4ESS, AT&T 5ESS, NI-1, NI-2, Siemens,
switch protocols
Nortel DMS 100, and Nortel 250
These are standard protocols for North America
Number of
23 B-channels dialable at 64 or 56 Kbps, and one D
channels
channel
Ensure that you have 64 Kbps clear channel service
Number of
1 (single PRI)
network
interfaces
Line build-out
DSU+CSU (0 to –22.5dB attenuation), DSU-only
modes
(DSX 0-665 feet)
Physical distance is offset by the settings in the user
interface
Clocking
Must be derived from the external network or the
PBX
Terminal
0-63
Endpoint ID
This identifies the PRI endpoint; the common default
(TEI)
is 0
Numbering
One local directory number per interface (23
channels)
D-channel slot
24
number
Included to verify where the D channel is; this is
where additional diagnostic information resides
Call-by-call
Values 0-31 service codes for GVPN/PN/UPN
service codes
network-specific services
www.polycom.com
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