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This chapter provides physical and functional overviews of the Cisco AccessPath-VS3 Packet Telephony Concentrator.
This chapter includes the following sections:
The Cisco AccessPath-VS3 Packet Telephony Concentrator is an upgradable, high-density dial system. It is designed to terminate a large number of Integrated Services Digital Network (ISDN) and analog calls. The Cisco AccessPath-VS3 provides dial access for service providers deploying large-scale (140 or more) hybrid access ports at a central site. Through its distributed architecture, the system supports remote node or remote local-area network (LAN) applications.
The Cisco AccessPath-VS3 provides a remote access solution for the inter-exchange carrier (IXC), regional Bell operating company (RBOC), Internet service provider (ISP), competitive access provider (CAP), and large Enterprise markets. It integrates high-end access servers, Ethernet switches, and routers into a single Electronic Industries Association (EIA)-standard rack cabinet.
The Cisco AccessPath-VS3 accommodates both upgradable dial-port counts and high-performance backbone routing in a distributed system architecture. Processing tasks, such as answering and terminating calls, are divided among several CPUs, increasing overall system call processing and throughput performance. The System Controller interfaces the management and remote configuration of the system.
The Cisco AccessPath-VS3 integrates the latest voice, access server, switching, and advanced routing features of Cisco IOS software.
Figure 1-1 shows the 2 most popular configurations of the Cisco AccessPath-VS3.
 | Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
The Cisco AccessPath-VS3 Packet Telephony Concentrator is available in 3 standard configurations:
Each configuration is built around a Cisco switching and routing infrastructure, which can be expanded to support greater call volumes. The more powerful your infrastructure, the more VoIP access server shelves you can install in your system, thereby increasing your call-handling capacity.
You can upgrade your existing Cisco AccessPath-VS3 configuration by adding a Switch shelf, a Router Shelf, or multiple VoIP Access Server shelves to your system. You can fully upgrade from 1 configuration to another, or modify an existing configuration by adding VoIP access server shelves.
Each configuration contains a switched infrastructure that consists of various combinations of Cisco's Ethernet switching module and the Switch shelf. The switched system fabric speeds the processing of incoming requests, then transfers them to the router shelf or shelves.
Your Cisco AccessPath-VS3 is designed to support 2 to 21 VoIP access server shelves. You can initially configure your system with fewer VoIP access server shelves, then add shelves as your call density increases.
All configurations include:
A System Controller provides console management functions for the Cisco AccessPath-VS3,
while multiple VoIP access server shelves supply the dial front-end interface. Each VoIP access server shelf contains a series of ports that serve as points of entry for calls arriving at your site.
Depending on the configuration, either 1 or 2 router shelves are installed in the system. These provide process server and backhaul functions. The routers also provide load balancing while demand is heavy; in the High-End configurations, the presence of 2 router shelves leads to the activation of a failover path should a single router shelf fail.
The following sections describe each of the 3 Cisco AccessPath-VS3 configurations in more detail.
The Cisco AccessPath-VS3 Midrange configuration can support 2 to 11 VoIP access server shelves.
The Cisco AccessPath-VS3 Midrange Configuration adds the following shelves to the overall package:
In a Midrange configuration, the Catalyst 5002 switch provides the system's primary switching services. It can deliver more than 1 million packets per second (pps) throughput across a 1.2-Gbps backplane; the 24-port 10/100BaseT line card meets all 3T3 connectivity and switching requirements.
In this configuration, a single Ethernet switch module operates in the router shelf. If the Catalyst 5002 switch fails for any reason, the switch module will step in to switch traffic between the VoIP access server shelves and the router shelf.
The Cisco AccessPath-VS3 High-End configuration adds a second router shelf to the Midrange configuration. The High-End configuration can support 2 to 14 feature shelves.
The second router shelf provides load balancing for greater processing efficiency and system-level failover, as well as support for a maximum of 14 VoIP access server shelf.
The Cisco AccessPath-VS3 High-End Configuration adds the following shelves to the overall package:
The High-End Extended Configuration adds the following shelves to the overall package:
The placement and numbering of the VoIP access server shelves are shown in Figure 1-2.
The Cisco AccessPath-VS3 includes the following features:
The Cisco AccessPath-VS3 arrives preracked, precabled, and preconfigured with default configurations. The Cisco AccessPath-VS3 includes a System Controller that provides console management of each device in the cabinet. This adds resiliency to the system by allocating a direct out-of-band console connection to every Cisco AccessPath-VS3 shelf.
You can use a terminal connection to the System Controller, command-line interface (CLI), and supplied custom or sample (typical) configurations to configure individual devices. We recommend that you configure system devices with the Configurator Tool.
You can access the Cisco AccessPath-VS3 Configurator at http://www.cisco.com/support/toolkit/Accesspath/apc_vs3_index.html. The tool includes online help.
Also see the Cisco AccessPath-VS3 Packet Telephony Concentrator Software Configuration Guide at http://www.cisco.com/univercd/cc/td/doc/product/access/ap/apvs3/vs3_sw/configs/index.htm.
The Cisco AccessPath-VS3 has no single point of failure. Operating time is maximized, and no single-device failure disables the system. This applies to all Cisco AccessPath-VS3 configurations.
The Cisco AccessPath-VS3 provides guaranteed compatibility to networks that run Cisco IOS software. Cisco IOS software runs on most of the world's internetworks, both on Cisco routers and on many partners' platforms. Customers can leverage their current training and experience with Cisco IOS software to install, configure, and manage the Cisco AccessPath-VS3.
Refer to the Cisco AccessPath-VS3 Packet Telephony Concentrator Software Configuration Guide at http://www.cisco.com/univercd/cc/td/doc/product/access/ap/apvs3/vs3_sw/configs/index.htm and the Release Notes for the Cisco AccessPath-VS3 Packet Telephony Concentrator for Multilple Cisco IOS Releases for additional information on Cisco IOS software in the Cisco AccessPath-VS3.
The Cisco AccessPath-VS3 avoids incompatibility concerns that normally plague multivendor or multibox installations, by integrating access servers, an Ethernet switch, and high-performance routers into 1 system. The Cisco AccessPath-VS3 is precabled, and individual devices are configured with sample (typical) configurations, thereby guaranteeing interoperability.
You can upgrade your Cisco AccessPath-VS3 configuration to fit the changing needs of your company. You can upgrade from 1 configuration to another; for example, you can upgrade from a Midrange to a High-End configuration. You can skip configuration levels when upgrading; for example, you can upgrade a Midrange system configuration to a High-End Extended configuration.
You can also upgrade a configuration without changing infrastructure devices by adding VoIP access server shelves to expand incoming call-handling capability. Alternately, you can upgrade the infrastructure devices without adding VoIP access server shelves, then add VoIP access server shelves later.
See the Cisco AccessPath Model 531 Hardware Upgrade and Configuration Guide for information and procedures on upgrading your Cisco AccessPath-VS3.
The Cisco AccessPath-VS3's modular cabinet architecture also enables both the rapid implementation of new technologies, and hot swapping of new hardware devices as they become available.
In addition to hardware upgradability, the Cisco AccessPath-VS3 includes software upgradability through Cisco IOS software. The 3 available options reflect the most common applications that the Cisco AccessPath-VS3 is used for.
T1 or E1 lines, supporting either ISDN PRI or channel-associated signaling (CAS), feed into the Cisco AccessPath-VS3's VoIP Access Server shelves. Each VoIP access server shelf supports 2 or 4 T1/E1 connections. With a maximum configuration of 21 VoIP access server shelves, the Cisco AccessPath-VS3 can accommodate up to 84 T1 or E1 connections. Table 1-1 lists the maximum call terminations for each supported connection type and interface.
| Connection | Interface | Maximum Number of Calls (21 VoIP Access Server shelves) | Call Type |
|---|---|---|---|
T1
| PRI | 2016 | Analog or ISDN |
CAS1 a | 2016 | Analog | |
E1
| PRI | 2520 | Analog or ISDN |
CAS b | 2520 | Analog |
| 1CAS = Channel-Associated Signaling. |
The calls arrive at the VoIP Access Server shelf ports and are sent on to the Switch shelf, aggregated, multiplexed, and sent over a 100BaseT Fast Ethernet connection to the Cisco 7206 router.
Figure 1-4 shows a Cisco AccessPath-VS3 Midrange configuration set up for single-channeled interfaces.
If a PPP session analog call comes in to a VoIP access server shelf from the cloud, it is framed and forwarded (multiplexed) to the Switch shelf, then forwarded to the Cisco 7206 router.
Figure 1-5 illustrates a typical ISP environment using multichassis multilink PPP (MMP).
From the Router Shelf, customers can route calls to a wide variety of services. Calls can be routed to a WAN or to another switch. If calls are forwarded through a WAN to a home gateway, the Cisco 7206 router acts as a conduit to that gateway.
This section describes the physical device characteristics and interaction of the Cisco AccessPath-VS3 Packet Telephony Concentrator. For more information about each of these devices, refer to the documents listed in the preface "About This Guide" in the section "Related and Referenced Documents".
The Cisco AccessPath-VS3 includes the following devices:
| Description | Specification |
|---|---|
|
79.5 x 25.9375 x 32 in. (201.93 x 55.89 x 81.28 cm) 79.5 x 25.9375 x 30 in. (201.93 x 55.89 x 76.2 cm) |
Weight per cabinet (approximate)
|
600 lb (275 kg) 1100 lb (500 kg) 1300 lb (590 kg) including casters 1450 lb (660 kg) including pallet and accessory kits |
|
100 to 240 VAC 127 to 60A 50 to 60 Hz |
|
-48 to -60 VDC nominal 231A max @ -48 VDC 177A max @ -60 VDC 11,088W -48 VDC 10,620W @ -60 VDC |
Operating environment | 32 to 104ºF (0 to 40ºC), continuous operation |
Non-operating temperature | -4 to 149ºF (-20 to 65ºC) |
Operating humidity | 10 to 85%, noncondensing |
Regulatory compliance | FCC Part 15 Class A. NEBS Standard Certification. For additional compliance information, refer to the regulatory compliance and safety information document that accompanied the Cisco AccessPath-VS3. |
This section provides the Cisco AccessPath-VS3 Packet Telephony Concentrator specifications on a configuration-by-configuration basis. Parameters such as system weight and power usage will vary depending on the particular configuration.
The Cisco AccessPath-VS3 has a single 19-in. (48.3 cm) rack-designed cabinet (79.5 in. [202 cm] high) that accommodates up to 1008 simultaneous callers terminated in a single T1-configured cabinet (up to 1260 in an E1-configured cabinet).
The types of interfaces are:
The Cisco AccessPath-VS3 also supports NxT1 and NxCT1 for dedicated connections.
Specifications for the devices that make up the Cisco AccessPath-VS3 are detailed in the following sections.
The Cisco AccessPath-VS3 provides out-of-band management services with a System Controller. The System Controller provides basic and emergency local system access.
The System Controller ports provide basic and emergency remote system access via the auxiliary port and serial WAN, Ethernet, and Token Ring connections. The serial WAN connections use a proprietary, 60-pin connector, while the Ethernet and Token Ring connections use standard LAN cabling with an attachment unit interface (AUI) or DB-9 connector.
The Cisco AccessPath-VS3 System Controller is the Cisco 3640 System Controller. Figure 1-7 and Figure 1-8 show the System Controller connectors and cabling.
The System Controller includes the following:
| Description | Specification |
|---|---|
Dimensions (H x W x D) | 3.5 x 17.5 x 15 in. (8.89 x 44.45 x 38.10 cm), 2 rack units |
Weight | 10 lb (4.5 kg) |
AC Power:
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100 to 240 VAC 2A 50 to 60 Hz 215W (maximum), 740 BTUs1/hr |
DC Power:
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80W, -48 to -60 VDC 5A 40W (maximum), 135.5 BTUs/hr |
Network interface options | Ethernet, serial, Token Ring, BRI, (S/T and U interfaces), T1/PRI, E1/PRI |
Serial interfaces | EIA/TIA2-232, EIA/TIA-449, V.35, X.21, NRZ3/NRZI, DTE/DCE4, and EIA-530 DTE. All serial interfaces use a DB-60 connector. |
Console and auxiliary ports | RJ-45 connector |
Operating humidity | 5 to 95%, non-condensing |
Operating temperature | 32 to 104°F (0 to 40°C) continuous |
Non-operating temperature | -40 to 185°F (-40 to 85°C) |
Noise level | 51.9 dB5 maximum |
Regulatory compliance | FCC Part 15 Class B. For additional compliance information, refer to the Regulatory Compliance and Safety Information document that accompanied the Cisco AccessPath-VS3. |
The Cisco AccessPath-VS3 can be configured with as many as 2 Gatekeeper shelves to centralize port-mapping information.
The Cisco AccessPath-VS3 Gatekeeper shelf is the Cisco 3640 Gatekeeper. Figure 1-9 and Figure 1-10 show the Gatekeeper shelf connectors and cabling.
The Gatekeeper shelf includes the following:
| Description | Specification |
|---|---|
Dimensions (H x W x D) | 3.5 x 17.5 x 15 in. (8.89 x 44.45 x 38.10 cm) (2 rack units) |
Weight | 10 lb (4.5 kg) |
AC Power:
|
100 to 240 VAC 2A 50 to 60 Hz 215W (maximum), 740 BTUs1/hr |
DC Power:
|
-48 to -60 VDC 5A 40W (maximum), 135.5 BTUs/hr |
Network interface options | Ethernet, serial, Token Ring, BRI, (S/T and U interfaces), T1/PRI, E1/PRI |
Serial interfaces | EIA/TIA2-232, EIA/TIA-449, V.35, X.21, NRZ3/NRZI, DTE/DCE4, and EIA-530 DTE. All serial interfaces use a DB-60 connector. |
Console and auxiliary ports | RJ-45 connector |
Operating humidity | 5 to 95%, non-condensing |
Operating temperature | 32 to 104°F (0 to 40°C) continuous |
Non-operating temperature | -40 to 185°F (-40 to 85°C) |
Noise level | 51.9 dB5 maximum |
Regulatory compliance | FCC Part 15 Class B. For additional compliance information, refer to the Regulatory Compliance and Safety Information document that accompanied the Cisco AccessPath-VS3. |
The Cisco AccessPath-VS3 VoIP Access Server shelf is the Cisco AS5300 access server. Figure 1-11 and Figure 1-12 show the VoIP Access Server shelf connectors and cabling.
Refer to the cabling in Figure 1-12 to see the VoIP access server shelf cabled into the cable harness.
Each VoIP Access Server shelves consists of the following:
| Description | Specification |
|---|---|
Dimensions (H x W x D) | 3.5 x 17.5 x 18.25 in. (8.89 x 44.45 x 46.36 cm) |
32 lb maximum (14.5 kg) | |
150 MHz | |
32 to 104ºF (0 to 40ºC) | |
-40 to 185ºF (-40 to 85ºC) | |
5 to 95%, noncondensing | |
70 dB @ 3 ft (0.914 m) | |
AC Power:
|
100 to 240 VAC 2 to 5A 50/60 Hz 0.80 to 0.95 460W (maximum), 1600 BTUs/hr |
DC Power:
|
-48 to -60 VDC 9.0A 2.0 to 4.0A 63% 460W (maximum), 1600 BTUs/hr |
Quad T1/PRI (RJ-45) Quad E1/PRI (RJ-45) | |
Ethernet 10BaseT (RJ-45) Ethernet 10BaseT/100BaseT selectable (RJ-45) | |
Synchronous serial interfaces | EIA/TIA-232, EIA/TIA-449, V.35, X.21 (NRZ/NRZI and DTE/DCE mode) EIA-530 (NRZ/NRZI and DTE mode) The 5-in-1 synchronous serial interface uses the DB-60 connector at the chassis. |
Asynchronous serial (RJ-45) | |
|
5A 150W 250 VAC, 30 VDC |
Regulatory compliance | FCC Part 68. See also the Regulatory Compliance and Safety Information document that shipped with the Cisco AccessPath-VS3. |
The Cisco AccessPath-VS3 Router shelf is the Cisco 7206 router. Figure 1-13 and Figure 1-14 show the Router shelf connectors and cabling.
The Cisco AccessPath-VS3 Router shelf provides the following features:
 | Caution The Router shelf network processing engine does not support OIR. You must power down the router shelf before removing its network processing engine. For information on removing the processing engine, see the Cisco 7206 Installation and Configuration Guide. |
The Cisco 7206 router includes the following:
The front of the router shelf provides access to an I/O controller and up to 6 network interface port adapters. (See Figure 1-13.)
The I/O controller contains the following:
The port adapters installed in the Cisco 7206 router support online insertion and removal (OIR).
Network interfaces reside on port adapters that provide the connection between the router shelf's 3 Peripheral Component Interconnect (PCI) buses and external networks. The Cisco 7206 router has 6 port adapter slots, 1 slot for an I/O controller, and a single slot for a network processing engine.
Port adapter slots 1 through 6 in the Cisco 7206 router are numbered from left to right. Port adapter slot 0 is the Fast Ethernet port on the I/O controller. (See Figure 1-15.)
The different port adapters are installed in the slots of the Cisco 7206 router depending on your system configuration.
See Table 1-9 for more information on the standard port adapter configurations for the 3 Cisco AccessPath-VS3 configurations. (The blank slots may be used for sending traffic to your backbone network.)
| Configuration | Shelf | Port Adapter Slot Configuration |
|---|---|---|
Midrange | Cisco 7206 router 1 | Slot 1—Fast Ethernet Slot 2—Blank or optional backhaul Slot 3—Cisco Ethernet switching port adapter (PA-12E/2FE) (primary) Slot 4—Cisco Ethernet switching port adapter (PA-12E/2FE) (primary) Slot 5—Cisco Ethernet switching port adapter (PA-12E/2FE) (failover) Slot 6—Cisco Ethernet switching port adapter (PA-12E/2FE) (failover) |
High-End, or | Router Shelf 1 | Slot 1—Fast Ethernet Slot 2—Blank or optional backhaul Slot 3—Blank or optional backhaul Slot 4—Blank Slot 5—Cisco Ethernet switching port adapter (PA-12E/2FE) (failover) Slot 6—Cisco Ethernet switching port adapter (PA-12E/2FE) (failover) |
Router Shelf 2 | Slot 1—Fast Ethernet Slot 2—Blank or optional backhaul Slot 3—Blank or optional backhaul Slot 4—Blank Slot 5—Cisco Ethernet switching port adapter (PA-12E/2FE) (failover) Slot 6—Cisco Ethernet switching port adapter (PA-12E/2FE) (failover) |
You can access the network processing engine and power supplies from the end of the Cisco 7206 router shown in Figure 1-16.
The Cisco 7206 router can operate with 1 power supply. A second power supply is shipped with the Cisco AccessPath-VS3 to provide backup power if 1 power supply fails. The Cisco 7206 router does not support a mixture of AC- and DC-input power.
Table 1-10 lists the router shelf specifications and power requirements. For more information on agency compliance, see the document Regulatory Compliance and Safety Information for the Cisco AccessPath-VS3 Packet Telephony Concentrator.
| Description | Specification |
|---|---|
Midplane | 2 primary PCI buses and 1 secondary PCI bus with an aggregate bandwidth of 600 Mbps |
Dimensions (H x W x D) | 10.50 x 16.8 x 17 in. (26.67 x 42.67 x 43.18 cm) |
Weight | Chassis fully configured with a network processing engine, I/O controller, 6 port adapters, 2 power supplies, and a fan tray: ~ 50 lb (22.7 kg) |
Heat dissipation | 430W (1500 BTU) |
DC power supply input voltage
DC-input current rating | -48 VDC nominal in North America -60 VDC nominal in the European Community |
13A maximum at -48 VDC 8A maximum at -60 VDC | |
AC-input voltage AC-input current rating | 100 to 240 VAC |
5A | |
Frequency | 50/60 Hz |
Airflow | ~80 cfm1 |
Temperature | 32 to 104° F (0 to 40° C) operating; -4 to 149° F (-20 to 65° C) nonoperating |
Humidity | 10 to 90% noncondensing |
Minimum software requirements | Cisco IOS Release 11.1(5) or later for a router shelf with the following:
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Agency approvals
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UL 1950, CSA 22.2 No. 950, EN60950, AUSTEL TS001, FCC Class A, CSA Class A, EN60555-2, EN55022 Class B, VCCI Class 2, IEC-1000-4-2, IEC-1000-4-3, IEC-1000-4-4, IEC-1000-4-5, IEC-1000-4-6, IEC-1000-4-11, IEC 1000-3-2 |
| 1cfm = Cubic feet per minute. 2NPE = Network Processing Engine. |
The Switch shelf provides a 1.2-Gbps media-independent switch fabric. The backplane provides the connection between power supplies, supervisor engine modules, interface modules, and the backbone module. The switch shelf supports:
The Cisco AccessPath-VS3 Switch shelf is the Catalyst 5002 switch. Figure 1-17 and Figure 1-18 show the switch shelf connectors and cabling.
Typically, Catalyst 5002 switch Ethernet interfaces connect workstations and repeaters; the Fast Ethernet interfaces connect to workstations, servers, switches, and routers.
The switch shelf Includes the following devices:
The switch shelf provides the following high-level features:
The Cisco AccessPath-VS3 switch shelf supervisor engine module provides the following features:
The Switch shelf chassis has 2 slots. The top slot contains the supervisor engine module, which provides switching, local and remote management, and dual Fast Ethernet interfaces. The bottom slot contains the Fast Ethernet module.
The backplane module provides the connection between the supervisor engine module, interface modules, and power supplies. (See Figure 1-17.)
The Switch shelf backplane has no active components that could fail; it is completely passive. All interfaces are accommodated in a 19-inch rack.
| Description | Specification |
|---|---|
Dimensions (H x W x D) | 5.25 x 17.21 x 18.14 in. (13.3 x 42.5 x 44.5 cm) |
Weight
|
43 lb (19.5 kg) 84 lb (39 kg) |
AC-input voltage | 100 to 240VAC1 wide input with power factor correction |
AC-input current rating
|
5A 2.5A |
AC-power dissipation
|
215W 110W |
DC-input power | 370W maximum (with either a single or dual power supply configuration) |
DC-input voltage | -48 to -60 VDC continuous |
DC-input current rating |
6A max @ -48 VDC (nominal) 4A max @ -60 VDC (nominal) |
Processor | 25MHz Motorola 68EC040 |
LAN interfaces | 10BaseT Ethernet 10BaseT Ethernet (RJ-21) 10BaseT Ethernet (RJ-45) 10BaseFL Ethernet 100BaseTX Ethernet 10BaseT/100BaseTX Fast Ethernet 100BaseFX Fast Ethernet CDDI FDDI ATM LAN Emulation OC-3 |
Regulatory Compliance | FCC Part 15 Class B. For additional compliance information, refer to the Regulatory Compliance and Safety Information document that accompanied the Cisco AccessPath-VS3. |
| 1VAC = Volts alternating current. |
Posted: Wed Sep 27 18:49:38 PDT 2000
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