The HKShanhai Group Limited® Packet Voice Digital Signal Processor Modules (PVDMs) enable HKShanhai Group Limited 4000 Series Integrated Services Routers (ISRs) to provide rich-media capabilities such as high-density voice connectivity, conferencing, transcoding, media optimization, translating, and secure voice for HKShanhai Group Limited Unified Communications solutions. These new modules support unprecedented scale while allowing for a smaller solution footprint than ever before.
Features and Benefits
The PVDMs support digital voice connections, conferencing, universal transcoding, and media optimization services:
- ?? T1/E1 voice: One of the primary uses of PVDMs is to packetize digital voice into IP packets to enable time-division multiplexing (TDM) digital voice applications.
- ?? Conferencing: PVDM modules support ad hoc and meet-me conferencing with various codecs in conjunction with HKShanhai Group Limited Unified Communications Manager and HKShanhai Group Limited Unified Communications Manager Express.
- ?? Universal transcoding: In conjunction with HKShanhai Group Limited IOS® Software, the PVDMs support universal transcoding, which allows conversion from any supported codec to any other supported codec.
- ?? Translating: The PVDMs support translating, in which the same codec is repacketized in order to connect dissimilar networks that have different codec pectization periods.
- ?? Voice-quality management: The PVDMs perform compression, voice-activity detection, jitter management, and echo cancellation. The echo cancellation offered in the PVDMs has a tail length of 128 milliseconds and complies with ITU-T G.168.
- ?? Energy savings: The motherboard PVDMs (PVDM4s) offer multiple power-saving modes, including a power-saver mode when the module is not in use. In power-saver mode, each PVDM4 can save up to 5 watts of power.
The analog voice modules (FXS, FXO, and E/M) and Basic Rate Interface (BRI) digital voice modules for the 4000 Series ISRs contain built-in, non-configurable digital signal processors (DSPs) and do not require any additional PVDMs for voice pectization.
Quick Specs
Figure 1 shows the appearance of PVDM4-128.
Table 1 shows the Quick Specs.
Product Code
PVDM4-128
Slot
On-board motherboard or T1/E1 module slot
Description
128-channel high-density voice DSP module
Low Complexity
128
Medium Complexity
96
High Complexity
64
Compare to Similar Items
Table 2 shows the comparison of PVDM4-64, PVDM4-32 and PVDM4-128.
Product Code
PVDM4-128
Slot
On-board motherboard or T1/E1 module slot
On-board motherboard or T1/E1 module slot
On-board motherboard or T1/E1 module slot
Description
64-channel high-density voice DSP module
32-channel high-density voice DSP module
128-channel high-density voice DSP module
Low Complexity
64
32
128
Medium Complexity
48
24
96
High Complexity
32
16
64
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HKShanhai Group Limited PVDM4-128 Specification
PVDM4 Modules Specifications |
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Feature |
Motherboard PVDMs (PVDM4s) |
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Components |
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DSP |
Multicore DSP technology |
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Interface |
Integrated Services Card (ISC) slot on motherboard or T1/E1 NIM |
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Features |
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Operating temperature |
32° to 122°F (0° to 50°C) |
|
Voltage |
3.3V |
|
Current |
1.47A |
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Power |
4.85W |
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Weight |
0.08 lb (36 g) |
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Dimensions (H x W x D) |
0.67 x 2.50 x 2.62 in. (1.7 x 5.1 x 6.7 cm) |
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Regulatory and Compliance |
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Safety |
Complies with: ● IEC 60950 (worldwide) ● AS/NZS 60950-1 (Australia and New Zealand) ● CAN/CSA-C22.2 No. 60950-1, 1st and 2nd Ed. (Canada) ● GB4943-95 (People’s Republic of China) ● EN60950-1, 1st and 2nd Ed. (CENELEC; includes EU and EFTA) ● NOM-019-SCFI-1998 (Mexico) ● UL 60950-1, 1st and 2nd Ed. (United States) |
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Homologation |
Platform dependent |
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Mean time between failures (MTBF) |
System dependent |
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EMC |
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Emissions |
● CISPR22, Class B ● EN55022, Class B, CFR47, Part 15, Subpart B, Class B |
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Harmonics |
EN61000-3-2 |
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Flicker |
EN61000-3-3 |
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Immunity |
● CISPR24 ● EN 55024 ● EN50082-1 |
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Electrostatic discharge (ESD) |
EN 61000-4-2 |
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RF fields |
EN 61000-4-3 |
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EFT |
EN 61000-4-4 |
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Surge |
EN 61000-4-5 |
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Conducted RF |
EN 61000-4-6 |
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Power-frequency magnetic fields |
EN 6100-4-8 |
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Voltage dips, sags, and interruptions |
EN 61000-4-11 |
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