Zhone Technologies IMACS Network Device - Manual (Page 74)

Zhone Technologies, Inc. IMACS Product Book, Version 4
March 2001 Page 70
Table 21—ADPCM Server Card Specifications
Input Voice Channels Can originate from any 2-wire or 4-wire voice card or from a DSO on a WAN
(El/T1 or HDSL) interface.
µ
-Law & A-Law 64Kbps PCM compatible on a per
channel basis
Input Sub-rate Data SRU data traffic at 19.2Kbps or less can be carried on a 24Kbps sub-channel
Input BRI traffic B channel voice traffic can be compressed at any of the configurable rates
Modem Data Support Transcoder rate: 24, 32 or 40 Kbps; Modem Data: none, up to 4.8Kbps, V.32
to 9.6Kbps, up to 12Kbps and V.32 bis to 14.4Kbps
Fax Support Transcoder rate for fax: 24, 32 or 40 Kbps; none, Group II and Group III fax
Voice Quality As measured by Mean Opinion Score (MOS) analysis, a subjective
evaluation with a range of 0 (poor quality) to 5 (good quality). Toll
quality voice is accorded a MOS of 4.0 24Kbps transcoder rate MOS is
3.6-3.8; 32Kbps transcoder rate MOS is 4.0-4.3 and 40Kbps transcoder
rate MOS is 4.0-4.3
Echo Cancellation Non provided—typically not required
Signaling Transmitted in-band utilizing CAS transitional signaling, as per ANSI
T1.302—1986 for 32Kbps and modified for use with 24Kbps and
40Kbps. Note Robbed Bit Signaling Alarm Transmission, as specified
in ANSI T1.302a-1989 is not supported
Maximum Card Count 3 (with 3.x CPU-2 active with 1 redundant or 3 active, 5.x CPU 3active)
Transcoder Operation Compliant to G.761 Alarm Indication and Fault Handling
Standards Compliance ANSI T1.3021989, ANSI T1.302a 1992, ANSI T1.3031989, CE EN
500- 81-1, CE EN 500-82-1, CE EN 60950/A2, ITU-T G.721, ITU-T
G.723, ITU-T G.726 12/90
2. ISDN Primary Rate Interface (PRI) Server
The PRI Server Card provides flexible access and routing of PRI-based ISDN services. The ISDN PRI Server can
be used for enabling applications such as Video Conferencing, Video Broadcast, ISDN Grooming, and Fractional
PRI provisioning. The PRI Server card supports B channel bandwidth of 56K, 64K, 384K, 1536K and Multi-Rate
speeds where available. Multi-Rate speeds allow the PRI server card to select calls in increments of 64Kbps. In
areas where Multi-Rate is not supported by the local ISDN switch, an Inverse Mux (IMUX) Server Card should be
used to aggregate individual 64Kbps calls.
The PRI card can be utilized with the 8213 Switched HSU Card for RS-366 and V.25bis bandwidth on demand
dialing. Additionally, regular HSU cards can be used for DTR dialing. The PRI server card supports both the
Network and User side protocols associated with ISDN PRI services and therefore the IMACS can be used to both
originate and terminate ISDN calls.
The following components make up the BRI/PRI solution:
•
One 881160 Multi-Server Card
•
One 65100 BRI/PRI Service Translation Software Package
•
Optional WAN Interfaces with associated Line Interface Modules
•
Optional ISDN ‘U’ and “S/T” Interfaces