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The Cisco Media Gateway Controller (MGC) product line consists of hardware and software packages that you can use to connect your packet data network to the Public Switched Telephone Network (PSTN). Cisco MGC products manage call signaling conversion between the PSTN and the packet data network, and depending on the product, Cisco MGC products can control the switching and routing of calls across the PSTN or packet data network.
Cisco offers multiple Cisco MGC products, which are introduced in this chapter with the available product configurations and the hardware components used in these product configurations.
 |
Note Some product labels and packaging might use the term telephony controller. Any references to the telephony controller apply to the media gateway controller. |
This chapter contains the following sections:
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Note See Chapter 6, "Maintenance," for material that is not part of the initial installation process, such as instructions to download firmware updates. |
The Cisco SC2200 product is a signaling controller (SC) that converts telephony signals from one protocol variant to another. For example, the Cisco SC2200 converts Signaling System 7 (SS7) variants, such as ANSI SS7, to an IP-based variant required to establish calls between the PSTN and a packet data network.
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Note The SC term refers to the function of the Cisco SC2200 product and to the computers that perform the signaling conversion, the SC hosts. The MGC is a generic term that applies to both SC and virtual witch controller (VSC) products and components. The Cisco VSC is introduced later in this chapter. When text specifically refers to SC or VSC, as in SC host or VSC host, the text applies to only that solution. When the generic term Cisco MGC host is used, the text refers to both SC and VSC hosts. |
Table 1-1 lists the host configurations used with the Cisco SC2200. The Cisco SC2200 is a product that is designed to work with other Cisco products as part of a Cisco solution. For more information about how the Cisco SC2200 is used in these solutions, refer to the solution overview document.
| Host | SC2200 Release 1 | SC2200 Release 2 |
| TC-1120-DC-1NC |
|
|
| TC-1120-DC-1 |
| |
| TC-1120-DC-2 |
| |
| TC-1125-AC-1 |
| |
| TC-1125-AC-2 |
| |
| TC-E450-AC-1NC |
|
|
| TC-E450-AC-1 |
| |
| TC-E450-AC-2NC |
|
|
| TC-E450-AC-2 |
| |
| TC-1400-DC-1 |
| |
| TC-1400-DC-2 |
| |
| TC-1405-AC-1 |
| |
| TC-1405-AC-2 |
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To install the Cisco SC2200, you need to be familiar with the configuration options supported by the Cisco SC2200. The following sections describe the SC2200 host and signaling network configuration options available for the solutions that use th SC2200.
The Cisco SC2200 supports the following host configuration options:
The Cisco SC2200 supports the following signaling network configuration options:
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Note The signaling configurations listed above use the Cisco SLT to terminate standard A-links and F-links. The Cisco SLT designation is added to identify a signaling configuration within the Cisco MGC host. |
These configurations are described in the Cisco MGC Product Configurations.
The Cisco VSC3000 product is a virtual switch controller (VSC) that converts telephony signals from one protocol variant to another and controls the switching and routing of calls from one destination to another. For example, the Cisco VSC3000 converts SS7 signaling information from the PSTN to a signaling format that can be transmitted to media gateways. The Cisco VSC3000 also routes calls between multiple locations on the time-division multiplexing (TDM) and the packet data networks.
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Note The term VSC refers to the function of the Cisco VSC3000 products and to the computers that perform the VSC function, the VSC hosts. The term MGC is a generic term that applies to both VSC and SC products and components. The SC is introduced earlier in this chapter. When text specifically refers to VSC or SC, as in VSC host or SC host, the text applies specifically to that solution. When the generic term Cisco MGC host is used, the text refers to both VSC and SC hosts. |
The Cisco VSC3000 is designed to work with other Cisco products as part of a Cisco solution. Table 1-2 lists the host configurations used with the Cisco VSC3000. The Cisco VSC3000 is designed to work with other Cisco products as part of a Cisco solution. For more information about how the Cisco VSC3000 is used in these solutions, refer to the solution overview document.
| Host | VSC3000 |
| TC-1120-DC-1 |
|
| TC-1120-DC-2 |
|
| TC-1125-AC-1 |
|
| TC-1125-AC-2 |
|
| TC-1400-DC-1 |
|
| TC-1400-DC-2 |
|
| TC-1405-AC-1 |
|
| TC-1405-AC-2 |
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To install the Cisco VSC3000, you must be familiar with the configuration options supported by the Cisco VSC3000.
The Cisco VSC3000 supports the following host configuration options:
The Cisco VSC3000 supports the following signaling network configuration options:
These configurations are described in the Cisco MGC Product Configurations.
Figure 1-1 shows the general topology for all solutions that use Cisco MGC products.
All solutions include configurations that use one or two Cisco MGC hosts, one or more network signaling options, and one or more media gateways. Because many of the solutions support multiple combinations of these solution building blocks, the Cisco MGC product manuals organize installation and configuration around these building blocks. As you install and configure your solution, you can follow the instructions for the building blocks that apply.
The Cisco MGC product includes the Cisco MGC hosts and all equipment and interfaces that deliver PSTN signaling (SS7 and ISDN PRI signaling) to the Cisco MGC hosts. The Cisco MGC product does not include the media gateway or control signaling network equipment, which is ordered separately. The solution is the combination of the Cisco MGC product, the control signaling network equipment, and the media gateway.
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Note Because the control signaling network is required to connect the Cisco MGC host to the media gateway, it is presented in this guide with the Cisco MGC product. You can select your own control signaling network equipment or use the example control signaling network configuration presented in this guide. |
For instructions on installing and configuring your media gateway, refer to your solution overview documents.
The following sections describe the Cisco MGC product configurations, which are divided into the host configuration options and the signaling network configuration options.
The Cisco MGC products support the following single and dual host configurations:
A simplex Cisco MGC host configuration uses a single Cisco MGC host computer for all signal processing. Simplex configurations provide no fault tolerance and are usually used for solution testing, validation, or noncritical installations. If the host fails, calls are dropped, and service is discontinued.
The Cisco MGC software runs on the following host computers:
Each of these host computers is described in detail later in this chapter.
The high-availability configuration uses two Cisco MGC hosts for signal processing. The two hosts are installed in a hot standby configuration, where one host operates as the primary Cisco MGC host and the other host server operates as the standby Cisco MGC host. Figure 1-2 shows the high-availability configuration.
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Note High-availability configurations provide no fault tolerance. If the host fails, calls are dropped and service is discontinued. |
If a failure occurs in the active Cisco MGC host, the standby Cisco MGC host becomes the active host. This transition from one host to another is commonly referred to as failover. In order to facilitate failover, an A/B Switch is installed between the two host servers to switch signaling links from one host to the other. These signaling links are described later in this chapter.
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Note In addition to the automatic failover process, there is a manual switchover process that allows you to upgrade or maintain one host while the other is operating. |
The Cisco MGC software runs on the following host computers:
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Note One Cisco MGC host operates at a time. The two hosts cannot be deployed in a load-sharing configuration. |
As with the high-availability configuration, the continuous-service configuration uses two host computers for fault tolerance. The active Cisco MGC host controls signal processing, and the standby Cisco MGC host takes over signal processing only after a failure is detected. If one host fails, there is a momentary interruption in new call processing, but no calls are dropped. Figure 1-3 shows an example of a continuou- service configuration.
The most visible difference between the high-availability configuration and the continuous-service configuration is the termination of the signaling links. In the high-availability configuration, signaling links pass through the A/B Switch and terminate at the host computer. In the continuous-service configuration, the signaling links terminate at Cisco Signaling Link Terminals (SLTs). This configuration uses SLTs to manage redundant signaling links.
The continuous-service configuration is more robust than the high-availability configuration. Off-loading SS7 signal preprocessing to the Cisco SLTs improves Cisco MGC host processing performance, and routing preprocessed signals to both Cisco MGC hosts improves failover performance.
Failover performance is further enhanced by an error-checking function that operates between the two Cisco MGC hosts over the control signaling network. When an error condition is detected on the active host, responsibility for call processing is switched to the standby host. The standby host then becomes the active host.
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Note In addition to the automatic failover process, there is a manual switchover process that allows you to upgrade or maintain one host while the other is operating. |
In the continuous-service configuration, the Cisco MGC software runs on the following host computers:
Each of these hosts is described in detail later in this chapter.
The Cisco MGC products support the following signaling configurations:
A-link signaling configurations are used to connect to an SS7 network through an access link. A-links connect the Cisco MGC host to an SS7 Signal Transfer Point (STP) in the SS7 network. In the A-link configuration, the signaling link connects directly to an interface card in the Cisco MGC host, as shown in Figure 1-4.
The A-link signaling configuration can be used with simplex and high-availability host configurations, and it supports V.35, T1, and E1 interfaces using signaling interface cards installed in the
Cisco MGC host. Each interface supports a single DS0 signaling channel.
A-link Cisco SLT signaling configurations are similar to A-link configurations. The connection at the SS7 network is made through an access link that connects to an STP and the the signaling link is terminated on a Cisco SLT, as shown in Figure 1-5.
In the A-link Cisco SLT signaling configuration, the Cisco SLT processes the two lowest-layer SS7 signaling protocols, MTP1 and MTP2. The upper layer protocols are then forwarded to the Cisco MGC host over the control signaling network. Each Cisco SLT supports two signaling network connections, and multiple Cisco SLTs can be used to support additional signaling channels or provide redundant signal paths between the signaling network and the control signaling network.
The A-link Cisco SLT signaling configuration supports V.35, T1, and E1 interfaces using signaling interfaces installed in the Cisco SLT. The A-link SLT configuration can be used with simplex and continuous-service host configurations. Each interface supports a single DS0 signaling channel.
F-link signaling configurations are used to connect to an SS7 network through fully associated links. F-links connect the Cisco MGC host directly to a Service Switching Point (SSP) or a Service Control Point (SCP) in the SS7 network; they do not make an intermediate connection through STPs. In the F-link configuration, the signaling link connects directly to an interface card in the Cisco MGC host.
As with the A-link configuration, the F-link signaling configuration can be used with simplex and high-availability host configurations, and it supports V.35, T1, and E1 interfaces using signaling interface cards installed in the Cisco MGC host. Each interface supports a single DS0 signaling channel.
F-link Cisco SLT signaling configurations are similar to A-link Cisco SLT configurations, as shown in Figure 1-5. The SS7 network connection is made through fully associated links that connect an SSP or SCP to the Cisco SLT.
The F-link Cisco SLT signaling configuration supports V.35, T1, and E1 interfaces using signaling interfaces installed in the Cisco SLT. The F-link Cisco SLT configuration can be used with simplex and continuous-service host configurations. Each interface supports a single DS0 signaling channel.
F-link Drop and Insert signaling configurations are similar to F-link Cisco SLT configurations. The
SS7 network connection is made through fully associated links that directly connect an SSP to the Cisco SLT. The difference is that an F-link Drop and Insert configuration supports a single DS0 signaling channel per link and additional bearer traffic channels up to the capacity of the T1 or E1 link, as shown in Figure 1-6.
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Note The F-link Drop and Insert technique is also known as time-division multiplexing (TDM) cross-connect. |
The F-link Drop and Insert signaling configuration supports T1 and E1 interfaces using signaling interface cards installed in the Cisco SLT. The Drop and Insert cards are special two-port cards designed for this application. Signal and bearer traffic enter one port together, then the Cisco SLT separates the bearer traffic and routes it out the second port to the media gateway.
The F-link Drop and Insert configuration can be used with simplex and continuous-service host configurations. Each interface card supports a single DS0 signaling channel.
PRI backhaul configurations obtain call signaling data from D-channels on ISDN links connected to the media gateway. In the Cisco VSC3000 product, the media gateway routes D-channel signaling to the VSC host over the control signaling network. The VSC host takes action on the signaling information and sends routing instructions to the media gateway using the same control signaling network.
The following sections describe the components that make up the Cisco MGC solution configurations:
The Cisco MGC software runs on general computing platforms running the Sun Solaris operating system. The following host computers are manufactured by Sun Microsystems and have been tested and certified to operate with the Cisco MGC software:
The following sections introduce the Cisco MGC host computers and the signaling network interface cards.
The Sun Netra t 1400 is a telecommunications class server that was designed specifically for telecommunications applications. The Sun Netra t 1400 is NEBS- and ETSI-compliant and can support the following:
The Sun Netra t 1400 is DC-powered. The unit can be mounted in 19-inch, 23-inch, 24-inch, and 600-mm telco racks. Figure 1-7 and Figure 1-8 show the Sun Netra t 1400. See Table 1-3 for system specifications.
|
Note Refer to the Sun Netra t 1400/1405 Service and System Reference Manual for current specifications |
| Feature | Description | ||
|---|---|---|---|
Processor | As many as four 440-MHz UltraSPARC-II processors with | ||
Main memory | As many as 4 GB (with 128-MB SIMMs) | ||
Operating system | Sun Solaris 2.6 | ||
| Interfaces |
| ||
Network | Ethernet, STP (10BaseT and 100BaseT) | ||
I/O | 40-MB/sec Fast-20 UltraSCSI disk subsystem supporting as many as four 18-GB disk drives | ||
Serial | Two RS232/423 DB-25 serial ports (Asynchronous protocols) | ||
Parallel | Centronics-compatible parallel port (DB25) (EC mode capable) | ||
External | Fast-20 UltraSCSI 68-pin port | ||
PCI | Four full-size slots; two slots operating at 33 MHz, 32- or 64-bit, 5VDC; one slot operating at 33 MHz 32-bit only, 5VDC; one 66-MHz or 33-MHz, 32- or 64-bit, 3.3 VDC | ||
Alarm card | Implementing Lights Out Management | ||
| Environment |
| ||
DC power (Sun Netra t 1400) | -48/60 VDC nominal centralized DC power system | ||
AC power (Sun Netra t 1405) | 110-240 VAC | ||
Operating | 5 through 40°C (41 through 104°F) 5 through 85 percent relative humidity, noncondensing, subject to a maximum absolute humidity of 0.024 kg water/kg of dry air | ||
Short-term (96 consecutive hours) operating | -5 through 55°C (23 through 131°F) (at a maximum height of 1800 m) | ||
Non operating | -40 through 70°C (-4 through 158°F) 10 through 95 percent relative humidity, noncondensing, subject to a maximum absolute humidity of 0.024 kg water/kg of dry air | ||
Tape streamer | Error-free operation at 0 through 40°C (32 through 104°F) | ||
Temperature variation | 30°C/hr maximum | ||
Elevation | Operating: -300 through +3000 m nonoperating: -300 through +12000 m | ||
Acoustic noise | Less than 60 dBA at a distance of 600 mm and a height of 1500 mm, measured at 25°C | ||
Earthquake | NEBS requirements for Earthquake Zone 4 | ||
Regulatory Compliance and Safety Specifications (meets or exceeds the following requirements)
| |||
Safety | UL 1950 3rd Edition, CSA C22.2 No. 950, TUV EN 60950, CB Scheme with Nordic deviations EMKO-TSE (74-SEC) 203, ZH1/618, GR-1089-CORE | ||
RFI/EMI | FCC Class A, EN 55022 Class A, EN 61000-3-2, GR-1089-CORE | ||
Immunity | EN 50082-1, GR-1089-CORE | ||
Certification | NEBS Bellcore SR-3850 1st edition Level 3 (mission critical), UL, cUL, CEMark, TUV Buart MarkM__UWJ_M__U | ||
| Dimensions and Weights |
| ||
Height | 10.39 in. (264 mm) | ||
Width | 17.00 in. (431.80 mm) | ||
Depth | 18.79 in. (477 mm) | ||
Weight | 71.0 lb (32.00 kg) | ||
Enclosure | 19-, 23-, 24-in., 600-mm (requires mounting kit) | ||
The Sun Netra t 1405 is a telecommunications class server that was designed specifically for telecommunications applications. The Sun Netra t 1405 is NEBS- and ETSI-compliant and can support the following:
The Sun Netra t 1405 is AC-powered. The unit can be mounted in 19-inch, 23-inch, 24-inch, and 600-mm telco racks. Figure 1-9 and Figure 1-10 show the Sun Netra t 1405. See Table 1-3 for system specifications.
The Sun Netra t 1120 is a telecommunications class server that was designed specifically for telecommunications applications. The Sun Netra t 1120 is NEBS- and ETSI-compliant and can support the following:
The Sun Netra t 1120 is DC-powered. The unit can be mounted in 19-inch, 23-inch, 24-inch, and 600-mm telco racks. Figure 1-11 shows the front view of the Sun Netra t 1120 and the Sun Netra t 1125. Figure 1-12 shows the rear view of the Sun Netra t 1120 and the Sun Netra t 1125. See Table 1-4 for system specifications.
|
Note Refer to the Sun Netra t 1400/1405 Service and System Reference Manual for current specifications |
| Feature | Description | ||
|---|---|---|---|
Processor | As many as two 300-MHz UltraSPARC-II processors | ||
Main memory | As many as 2 GB (with 128-MB SIMMs) | ||
Operating system | Sun Solaris 2.5.1, 2.6 | ||
| Interfaces |
| ||
Network | Ethernet/Fast Ethernet, STP (10BaseT and 100BaseT) or MII for external transceiver | ||
I/O | 40-MB/sec UltraSCSI (SCSI-3 synchronous) | ||
Serial | Two EIA/TIA 232C or EIA/TIA 423 serial ports (DB25) | ||
Parallel | Centronics-compatible parallel port (DB25) | ||
PCI | Four full-size PCI with PCI specification version 2.1; three slots operating at 33 MHz, 32- or 64-bit data width; one slot operating at 33 or 66 MHz | ||
Alarm card | DB-15-pin connector; three dry contact outputs (minor, major, critical); external reset input | ||
| Environment |
| ||
DC power (Sun Netra t 1120) | -48/60 VDC nominal, 350 W, dual input | ||
AC power (Sun Netra t 1125) | 110-240 VAC 47-63 Hz | ||
Operating | 5 through 40°C (41 through 104°F) 5 through 85 percent relative humidity, noncondensing, subject to a maximum absolute humidity of 0.024 kg water/kg of dry air | ||
Short-term (96 consecutive hours) operating | -5 through 55°C (23 through 131°F) (at a maximum height of 1800 m) 5 through 90 percent relative humidity, noncondensing | ||
Non operating | -40 through 70°C (-4 through 158°F) 10 through 95 percent relative humidity, noncondensing, subject to a maximum absolute humidity of 0.024 kg water/kg of dry air | ||
Tape streamer | Error-free operation at 0 through 40°C (32 through 104°F) | ||
Temperature variation | 30°C/hr maximum | ||
Elevation | Operating: -300 through +3000 m nonoperating: -300 through +12000 m | ||
Acoustic noise | Less than 60 dBA at a distance of 600 mm and a height of 1500 mm, measured at 25°C | ||
Earthquake | NEBS requirements for Earthquake Zone 4 | ||
Regulatory Compliance and Safety Specifications (meets or exceeds the following requirements)
| |||
Safety | UL 1950 3rd Edition, CSA C22.2 No. 950, TUV EN 60950, CB Scheme with Nordic deviations EMKO-TSE (74-SEC) 203, ZH1/618, GR-1089-CORE | ||
RFI/EMI | FCC Class A, EN 55022 Class A, EN 61000-3-2, GR-1089-CORE | ||
Immunity | EN 50082-1, GR-1089-CORE | ||
Certification | NEBS Bellcore SR-3850 1st edition Level 3 (mission critical), UL, cUL, CEMark, TUV Buart MarkM__UWJ_M__U | ||
| Dimensions and Weights |
| ||
Height | 6.97 in. (17.70 cm) | ||
Width | 17.13 in. (43.50 cm) | ||
Depth | 19.53 in. (49.60 cm) | ||
Weight | 51.0 lb (23.18 kg) | ||
Enclosure | 19-, 23-, 24-in., 600-mm (requires mounting kit) | ||
The Sun Netra t 1125 is identical to the Sun Netra t 1120 except that the Sun Netra t 1125 is AC-powered.
Figure 1-11 shows the front view of the Sun Netra t 1120 and the Sun Netra t 1125. Figure 1-12 shows the rear view of the Sun Netra t 1120, which is similar to the Sun Netra t 1125 but uses a different power connector. See Table 1-4 for system specifications.
The Sun E450 is a data processing server. Unlike the Sun Netra t 112x and the Sun Netra t 140x, the Sun E450 is not NEBS- or ETSI-compliant. Special care should be taken to ensure that the operating environment meets the following minimum support specifications:
The unit is available only in an AC configuration. Because of its size, it can be mounted only in 4-post cabinets.
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Note The Sun E450 does not directly support external alarms. If external alarms are required, an Alarm Relay Unit (ARU) and Serial Port Expander must also be installed. |
Figure 1-13 shows the front view of the Sun E450. Figure 1-14 shows the rear view of the Sun E450, and Table 1-5 lists the Sun E450 specifications.
|
Note Refer to the Sun Enterprise 450 Server Owner's Guide for current specifications |
| Feature | Description | ||
|---|---|---|---|
Processor | As many as four 300-MHz UltraSPARC-II modules with on-board E-cache | ||
Main memory | As much as 4 GB RAM | ||
Operating system | Sun Solaris 2.5.1. 2.6 | ||
| Interfaces |
| ||
I/O | 10/100-Mb/sec Ethernet, Quad FastEthernet, Gigabit Ethernet, Token Ring, PCI I/O options: FDDI single attach, FDDI dual attach, ATM-155, ATM-622, high-speed serial, eight-line serial, UltraSCSI with 10/100 Mb/sec Ethernet, dual-channel single-ended UltraSCSI, dual-channel differential UltraSCSI, 100-MB/sec FCAL | ||
Serial | Two EIA-232D or EIA-423 serial ports, DB25 (requires Y-type splitter cable); one 50 through 384 Kbps synchronous, one 50 through 460.8 Kbaud asynchronous | ||
Parallel | 2-MB/sec Centronics compatible bidirectional EPP port; DB 25 | ||
PCI | Three slots for 32-bit 33-MHz 5V PCI cards | ||
| Environment |
| ||
Power supplies | One, two, or three modular, N+1 redundant, hot-swappable, universal input (two supplies standard) 1120W maximum, 560W maximum each supply | ||
AC | Power 90-264 Vrms, 47-63 Hz | ||
AC Service requirement | 15A at 110V, 7.5A at 240V | ||
Maximum power consumption | 1664 W | ||
Heat output | 5680 BTU/hour maximum | ||
Operating temperature | 5° through 40°C (41° through 104°F) at 20 through 80 percent relative humidity, noncondensing | ||
Non operating temperature | -20° through 60°C (-4° through 140°F) at 5 through 93 percent relative humidity, noncondensing | ||
Regulatory Compliance and Safety Specifications (meets or exceeds the following requirements)
| |||
Safety | UL 1950, CSA 950, TUV EN60950, IEC950 | ||
RFI/EMI | FCC Class B, DOC Class B, EN55022/CISPR22 Class B, VCCI Class II | ||
Immunity | EN50082/IEC-1000-2, IEC-1000-3, IEC-1000-4, IEC-1000-5 | ||
Harmonics | EN61000-3-2 | ||
| Dimensions and Weights |
| ||
Height | 22.87 in. (58.1 cm) | ||
Width | 17.64 in. (44.8 cm) | ||
Depth | 27.40 in. (69.6 cm) | ||
Weight | 205 lb (94.0 kg) | ||
Rack mounting | Sun E450 can be mounted in a standard 19-inch EIA rack with minimum depth of 30 inches (675 mm).
| ||
Table 1-6 lists the signaling interface cards that are available for installation in the following Cisco MGC hosts:
| Signaling Interface Cards | Supported Interface Types | Interfaces Per Card | Signaling Channels Per Interface |
|---|---|---|---|
Digi International, Inc. (formerly ITK International) E1/T1 card | T1 | 1 | 2 |
E1 | |||
PTI V.35 card | V.35 | 4 | 1 |
|
Note These cards are not used with the Sun Netra t 1400 and the Sun Netra t 1405. |
The Cisco SLT is used in all Cisco MGC products that ship with Cisco MGC Release 7 or later software. These products are used for all simplex and continuous service configurations.
|
Note The Cisco SLT feature is a Cisco 2611 modular access router running a special image of Cisco IOS Release 12.0(6)XR or 12.1(1)T. When running this special image, the Cisco 2611 operates as a signal terminating device and cannot perform routing functions and other features provided on a standard Cisco 2611. Only SS7 serial interfaces and protocols are supported on the Cisco SLT. There is no support for HDLC, PPP, Frame Relay, ATM, X.25, or other non-SS7 serial WAN protocols in this application. |
The Cisco SLT provides Signaling System 7 (SS7) termination for the Cisco MGC application. The Cisco SLT terminates the lower layers of the SS7 protocol, encapsulating the higher SS7 layers and reliably passing the IP packets back to the Cisco MGC application for interpretation and processing. The Cisco SLT performs like the traditional SS7 interface card but now allows Cisco MGC applications to be distributed and operated with greater reliability.
The Cisco SLT meets service provider's critical physical requirements for transmission equipment mounting in a standard 19-inch rack. The Cisco 2600 series routers have an RISC CPU architecture providing high-performance routing. Use the NEBS/ETSI Kit included with the Cisco SLT to assure NEBS compliance.
The Cisco SLT is powered by internal AC or DC power supplies. A redundant AC power supply adapter option is available. Each Cisco SLT can support a maximum of two SS7 links.
Table 1-7 lists the signaling configuration options supported by the Cisco SLT.
| Signaling Configuration | Interface Card Type | Interfaces Per Card | Signaling Channels Per Card | Interface Card Part Number |
|---|---|---|---|---|
A-link SLT | T1 | 1 | 1 | VWIC-1MFT-T1= |
2 | 2 | VWIC-2MFT-T1= | ||
E1 | 1 | 1 | VWIC-1MFT-E1= | |
2 | 2 | VWIC-2MFT-E1= | ||
V.35 | 1 | 1 | WIC-1T= | |
2 | 2 | WIC-2T= | ||
F-link Drop and Insert | T1 | 2 | 1 | VWIC-2MFT-T1-DI= |
E1 | 2 | 1 | VWIC-2MFT-E1-DI= |
|
Note Only one SS7 signaling channel is supported per T1 or E1 interface. In the F-link Drop and Insert configuration, only one signaling channel is supported, because one interface is used to receive signaling and bearer traffic and the other interface is used to route the isolated bearer traffic to the media gateway. |
Figure 1-15 and Figure 1-16 show the Cisco SLT.
The SLT supports features listed in Table 1-8.
| Feature | Description | ||
|---|---|---|---|
Processor | 40-MHz Motorola PowerQUICC MPC860 | ||
Main memory | |||
Operating system |
| ||
| Interfaces |
| ||
Network | 2 Ethernet ports 10BaseT | ||
I/O | Telco interface options vary per application | ||
Serial | 1 EIA/TIA-232 (RJ-45) console port for local system access using a console terminal 1 EIA/TIA-232 (RJ-45) auxiliary port for remote system access or dial backup using a modem | ||
Parallel | N/A | ||
PCI | N/A | ||
| Environment |
| ||
AC power | 100 through 240 VAC | ||
DC power | -48V | ||
Operating | 32 through 104ºF (0 through 40ºC) | ||
Short-term (96 consecutive hours) operating | 122ºF (50ºC) | ||
Non operating | -130 through 158ºF (-25 through 70ºC) | ||
Temperature variation | 5 through 95 percent, noncondensing | ||
Earthquake | NEBS requirements for Earthquake Zone 4 | ||
Noise level | 38 dBa minimum | ||
Regulatory Compliance and Safety Specifications (meets or exceeds the following requirements)
| |||
Safety | FCC Class B and Canadian DOC Class A For more regulatory information, refer to the Regulatory Compliance and Safety Information document that accompanied your router. | ||
RFI/EMI |
| ||
Immunity |
| ||
Certification | CS-03 | ||
| Dimensions and Weights |
| ||
Height | 1.69 in. (4.3 cm) | ||
Width | 17.5 in.(44.45 cm) | ||
Depth | 11.8 in. (30.00 cm) | ||
10.25 lb (4.66 kg) | |||
Enclosure | 19-, 23-, or 24-in. (600-mm) | ||
For additional information about the Cisco SLT, see the documentation or the Documentation CD-ROM that shipped with the product.
The control signaling network is the IP network that links the Cisco MGC host with the media gateway. In solution configurations that use the Cisco SLT, the control signaling network also links the Cisco SLTs to the Cisco MGC host. The control signaling network also links ingress and egress MGC hosts for solutions that may involve two or more MGC zones (an MGC node and the media gateways it controls) jointly supporting calls. The link between solution components can be a single Ethernet hub, or you can use redundant LAN switches to eliminate a single point of failure. You can also use a WAN to link the Cisco MGC host to remote media gateways.
The following sections introduce two ways to create a control signaling network. The first section describes generic requirements for a custom network that you create, and the second section introduces the Cisco Catalyst 5500 LAN switch, which is one of the Cisco products that you can use to create your control signaling network.
For simplex configurations, you can use the following topologies to create a control signaling network:
For high-availability configurations, you can use the following topologies:
For high-availability configurations, using dual hubs or switches eliminates the possibility of a single point of failure. The Cisco MGC hosts featured in this guide provide a single Ethernet network interface that you can use to connect the host to the control signaling network. The high-availability configuration requires the addition of an Ethernet interface card in one of the protocol control information (PCI) slots in the Cisco MGC host. Installing two Ethernet interfaces enables an independent connection to each switch or hub.
Many Cisco products can be used to create the control signaling network. However, providing examples for all of these products is beyond the scope of this guide. To simplify installation and configuration of the control signaling network, Cisco is documenting how to use the Cisco Catalyst 5500 LAN switch in a dual, fault-tolerant configuration. When designing your control signaling network, you can use the Cisco Catalyst 5500 to build your network as described in this guide. If you want to use other products, you can use the instructions for the Cisco Catalyst 5500 as a guide, but you will be responsible for creating the installation and configuration guidelines for that custom network.
Cisco Catalyst 5500 is a modular LAN switch that is used in the Cisco MGC solution configurations. The Cisco Catalyst 5500 supports the following features:
The switch chassis has 13 slots (see Figure 1-17). Slot 1 is used for the supervisor engine, which provides switching, local and remote management, and multiple uplink interfaces. Slot 2 can contain an additional redundant supervisor engine, which acts as a backup in case the first module fails. A failure of the active supervisor engine is detected by the standby module, which takes control of supervisor engine switching functions. If a redundant supervisor engine is not required, slot 2 is available for any switching module.
Slots 3 through 12 are available for any combination of switching modules.
Slot 13 is a dedicated slot, which accepts only the ATM switch processor (ASP) module or the Cisco Catalyst 8510 Campus Switch Router (CSR) switch route processor (SRP). When using the ASP in slot 13, the Cisco Catalyst 5500 switch accepts LightStream 1010 (LS1010) ATM port adapters in slots 9 through 12. When using the Catalyst 8510 CSR SRP in slot 13, the Cisco Catalyst 5500 switch accepts Cisco Catalyst 8510 CSR modules in slots 9 through 12.
The Cisco Catalyst 5500 switch has a 3.6-Gbps media-independent switch fabric and a 5-Gbps cell-switch fabric. The backplane provides the connection between power supplies, supervisor engine, switching modules, and backbone module. The 3.6-Gbps media-independent fabric supports Ethernet, Fast Ethernet, Gigabit Ethernet, FDDI/CDDI, ATM LANE, ATM dual PHY DS3, RSM, and RSM/VIP2 modules. The 5-Gbps cell-based fabric supports an ASP module and ATM port adapters. See the hardware and software documentation for the Catalyst 5500 LAN Switch for additional information.
For installation information for the Cisco Catalyst 5500 switch, see the "Installing LAN Switches" section on page 3-17 of this guide.
The A/B Switch, shown in Figure 1-18 and Figure 1-19, is used to switch signaling links from the active Cisco MGC host to the standby Cisco MGC host if a failure condition is encountered. The A/B Switch is manufactured by Dataprobe and is required for high-availability configurations. For more information about the A/B Switch, see Chapter 6, "Maintenance."
The Alarm Relay Unit (ARU) is a configuration option that provides contacts for critical, major, and minor alarms. For solutions using Cisco MGC Software Release 7 or later, an alarm card in the Sun Netra t 1120 and the Sun Netra t 1125 hosts can be used instead of the ARU. Figure 1-20 and Figure 1-21 show the ARU.
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Note The ARU is DC-powered only. |
For more information about the ARU, see Chapter 6, "Maintenance."
The Serial Port Expander adds additional serial interfaces to a Sun host computer. The Serial Port Expander option consists of a Sun PCI asynchronous interface card and a cable breakout box, as shown in Figure 1-22
Posted: Thu Jun 8 05:14:57 PDT 2000
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