Zhone IMACS Hardware FAQ 2
21. Can the redundant CPU have different software version from the primary CPU?
The redundant CPU needs the same branch software as the primary CPU. For example, if the primary CPU has software 5.1.1, the redundant CPU can be 5.1.2 or 5.1.3, but it can't be 3.x or 4.x.
22. What does the acronym (HSU) stand for and what is the card used for in the IMACS?
High Speed Unit: allows user to connect high-speed data terminal equipment (DTE) and data communications equipment (DCE) to WAN Links, server cards (ADPCM), or another HSU.
23. What does the acronym (SRU) stand for and what is the card used for in the IMACS?
Sub Rate Unit: allows user to multiplex a number of devices into a single, subdivided time slot on a WAN card. SRU ports can also be multiplexed with voice traffic on an ADPCM engine.
24. What does the acronym (FRAD) stand for and what is the card used for in the IMACS?
Frame Relay Assembler Disassembler: is a plug-in user card for the system. It provides users access to the Frame Relay network of carriers through the use of ten on board RS232 ports on the front panel of card.
25. What does the acronym (OCU-DP) stand for and what is it used for in the IMACS?
Office Channel Unit-Data Port: used to interface directly to data service units (DSU)/channel service units (CSU) supporting data traffic up to and including 64kbps.
26. Does the 8804 Bus Connect CPU Support Redundancy?
The model 8800 Bus Connect CPU does not support redundancy other than power supply redundancy. The model of CPUP also supports only one WAN card, which must be installed in slot W1. If the WAN card is a Dual WAN (8010). Drop and Insert from the first WAN port (W1-1) to the second WAN port (W1-2) is supported. Drop and Insert timeslots are mapped one-to-one, meaning timeslot #1 of the first WAN port is mapped to timeslot #1 of the second WAN port, #2 is mapped to #2, etc. The only exception to the Drop and Insert mapping rules is when E1 to T1 conversion is done. In this case, timeslots #1-4 on the T1 are mapped to #1-4 on the E1, #5-8 on the T1 are mapped to #6-9 on the E1, #9-12 on the T1 to the #11-14 on the E1, and so forth, with every fifth timeslot on the E1 skipped.
27. Does the 8800 Bus Connect CPU Support Redundancy?
The 8804 Bus Connect CPU/Redundant Capable supports both CPU redundancy and 1:1 WAN redundancy. In addition to redundancy, the 8804 supports up to two active WAN cards.
When 8804 CPU redundancy is desired, simply order another 8804 CPU with the same software options as the first. When WAN redundancy is required, the first active WAN card will be installed in slot W1, with an identical redundant WAN installed in slot W2. In this case "identical" means a WAN with the same model number (8000 or 8010) and the same plug-in modules (811 and/or 812) configured. An optional second active WAN card can be installed in slot W3, with an identical redundant WAN in slot W4. Note that this 1:1 WAN redundancy is supported only with model 8804 CPUs.
When using two active WAN cards with the 8804 CPUs, there is no Drop and Insert support on the second active WAN (W3), nor is there any cross-connect of traffic from W1 to/from W3. Additionally, remember that there are some user cards which cannot be routed to the second active WAN.
28. What's the difference between the power converter 8903, 8905, and 8908?
8903 is the power converter from 115VAC to -48VDC, 100W
8905 converts 115/240VAC to -48VDC, 100W
8908 converts 115/240VAC to -48VDC, 300W
8908 is only used in the power enhanced 891930 IMACS 900 chassis.
29. How many T1/E1 does the IMACS support?
The maximum T1/E1 IMACS can support depends on the type of interface card.
892760 supports 2 E1
892660 supports 2 T1
892360, 892261, 892260, and 892060 support up to 8 T1/E1
30. How many redundant features/cards are available in the IMACS?
The following cards have redundant features.
- Power supply, one redundant power supply available
- CPU card, one redundant CPU card available
- WAN card, one redundant WAN card available
- Ring Generator, four redundant Ring Generators for AC power and five for DC
31. How can I tell if an HSU card is a V.35 or RS-530?
V.35 or RS-530 is physical hardware settings. Either the card is preset by default or you have to manually set the switch. IMACS CPU could not learn which type is which type.
821660, 821570, and 821560,
4 ports, the selection of RS530 or V.35 is made on a port by port basis using on-board switches.
821460, 821360, and 820260,
2 ports, the selection of RS530 or V.35 is made on a port by port basis using on-board switches.
821260,
2 ports, V.35 only
820360,
2 ports, RS530 only
32. How many versions of HSU cards are there?
HSU (High Speed Unit) cards support two protocols, V.35 and RS530, and two interfaces, DB-25 and DB-26. We can provide all the possible combinations.
821660, 821570, 821560 has 4 DB26 connectors and supports both V.35 and RS530 (by on-board switches).
821360, 820160, has 2 DB25 connectors and supports both V.35 and RS520 (by on-board switches).
821460, 821260 has 2 DB25 connectors and supports V.35 only.
820360 has 2 DB25 connectors and only supports RS530.
33. What is an 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.
34. What voltage does the ring generator provide on the Streamline product?
The ringing generator provides ringing voltage of 105VAC (RMS) at 20 HZ for 24 simultaneous cadence (2 seconds on -4 seconds off) ringing ports or 12 simultaneously continuous ringing voice ports.
35. When is - 48VDC Talk Battery required?
Talk battery is required whenever there are analog Voice cards present in the System, unless all of those are E&M ports and are used in TO (Transmission Only) mode or when Type 1 signaling is used. A -48 VDC power source is also required for use with the External Alarm Cards, OCU_DP card and to provide sealing current for the BRI Card. The -48 VDC talk battery is provided by the Power supply.
36. What ringing voltage is on the Slimline?
Ringing Voltage 50 Vrms.
37. What is a Foreign Exchange-Station (FXSC) Coin Voice Card?
A Foreign Exchange-Station (FXSC) Coin Voice Card manages the flow of FXS voice traffic over the network. Each card encodes analog (voice, VF) signals to a digital bit stream at the local system for transmission over a T1 or E1 network. It also decodes the digital signals to analog at the remote system.
38. What kind of jack interface does the FXO Coin Card use?
The FXO Coin Card has a 50-pin Amphenol jack on its faceplate.
39. What is a FXO-C 2W*8-6 Coin Card?
The FXO-C 2W*8-6 Coin Card has eight wire ports, providing a 600-ohm terminating impedance. Card consists of backplane interface circuitry, serial EEPROM for card identification and adjustment parameters storage, metering pulse interface extension between Coin Box Office (CO) and coin phone on the CO side, and eight voice line interface circuits. Each line interface circuit consists of a codec, a hybrid circuit (2 to 4 wire converter), line feed circuitry and relays to control modes of operation.
40. What is a FXSC 2W*8-6 Coin Card?
The FXS-C 2W*8-6 Coin Card has six two wire ports and two wires, providing a 600-Ohm terminating impedance. Card consists of backplane interface circuitry, serial EEPROM for card identification and adjustment parameters storage, metering pulse interface extension between Coin Box Office (CO) and coin phone on the side of the coin phone, and six voice line interface circuits. Each line interface circuit consists of a codec, a hybrid circuit.
41. How many user cards (SRU, HSU, etc.) can be used in an IMACS 600, 800, or 900?
Assuming at least one WAN card in an IMACS 600, only 7 user cards can be used at the same time. An IMACS 800 or 900 can have 8 user cards. Caveat: Because there are two sets of data buses in the IMACS, AB and CD, with 64 timeslots on each set (AB actually reserves 2 timeslots, so user cards can only use 62), and because some models of user cards utilize the AB bus or the CD bus only, to maximize utilization of user card services, make sure that the IMACS is configured with a combination of user cards where some use the AB bus, and the balance use the CD bus.
42. What is a Low Bit Rate Voice Card?
The LBRV Card is a plug-in user card for the CPU server, which provides voice compression with echo cancellation.
43. What is the rate for the Low bit Rate Voice card?
The RATE field displays the compressed rate of the Cpipes. The values are 1x64 for 64Kbps pipes, 2x64 for 128Kbps pipes and 3x64 for 192 Kbps pipes. The default is 1x64.
44. How many ADPCM Server cards can be in use with Host 5.0?
All three ADPCM Server Cards can be used in Host 5.0. Note that 3.6 cannot support all three simultaneously. Host 3.6 only supports 2 ADPCM cards, and one redundant card.
45. What is the delay on the ADPCM card?
ADPCM - 2 frames or 250 microseconds.
46. What is the CPU switch time?
Switch from Primary CPU to redundant CPU is one reset time. One reset time is defined as 10 to 15 seconds. This is a worst case scenario, with all WANs assigned. Normal switch time is 5 to 7 seconds.
47. What is an E&M 2W*8 Card?
The E&M 2W*8 card has eight voice ports, each with 600-ohm terminating impedance.
48. What is a E&M 2713 Hz Card?
The E&M 2713 Hz Card provides digital loopback (both audio and signaling) when activated by a 2713 Hz tone of specified level and duration.
|
