J-series Services Router Features

This section describes the new J-series Services Routers features, available with the JUNOS 8.2R4 release. For more information, see the following manuals:

• J2300, J4300, and J6300 Services Router Getting Started Guide
• J4350 and J6350 Services Router Getting Started Guide
• J-series Services Router Basic LAN and WAN Access Configuration Guide
• J-series Services Router Advanced WAN Access Configuration Guide
• J-series Services Router Administration Guide

For more information about the JUNOS Internet software that runs on Services Routers, see the manuals listed in Table 5.

Interfaces and Chassis

• Integrated voice and data traffic on a single T1/E1 interface—The drop-and-insert multiplexer is now integrated into channelized T1/E1 PIMs on Services Routers. On channelized T1/E1 interfaces partitioned into channels, you can insert time slots from one port directly into the other port on the same PIM, to replace time slots coming through the Routing Engine. To specify whether the channel sends and receives data from the Routing Engine (system) or the named interface, include the data-input system | interface interface-name statement at the [edit interfaces ds-pim/0/port.:channel] hierarchy level.

  To avoid slips, both ports must use the same clock source, either the router’s internal clock or an external clock on one of the interfaces. If an external clock source is required, one interface must specify clocking external and the other must specify the same clock with clocking external interface interface-name.

  Note: Before installing a channelized T1/E1 PIM on a Services Router, make sure the router is running JUNOS Release 8.1 or later. If you plan to downgrade the router to JUNOS 8.0 or earlier, remove the channelized T1/E1 PIM before you downgrade.

• USB modems to remotely manage J-series Services Routers—The Services Router now supports the use of USB modems for remote management. You can use Telnet or SSH to connect to the router from a remote location through two modems over a telephone network. One USB modem is connected to the USB port on the Services Router, and the second modem is connected to a remote management device such as a PC or laptop computer.

  Note: We recommend using a Multi-Tech MultiModem MT5634ZBA-USB-V92 USB modem with J-series Services Routers.

• Larger delay buffers for channelized T1/E1 interfaces—By default, interfaces other than channelized T1/E1 interfaces on Services Routers are limited to 100,000 microseconds of delay buffer. On channelized T1/E1 interfaces, the default delay buffer is 500,000 microseconds for clear-channel interfaces, and 1,200,000 microseconds for NxDS0 interfaces. This feature allows you to configure larger delay buffers for the NxDS0 channelized T1/E1 interfaces to avoid congestion and packet dropping that occur when large bursts of traffic are received by slower interfaces. You can configure larger delay buffers for NxDS0 channelized T1/E1 interfaces only.

Services Applications

VoIP support on J4350 and J6350 Services Routers—J4350 and J6350 Services Routers support voice over IP (VoIP) routing with the Avaya IG550 Integrated Gateway. The Avaya IG550 Integrated Gateway consists of the following VoIP modules that are installed in the slots on J4350 and J6350 Services Routers:

• TGM550—Avaya Telephony Gateway Module (TGM) with two analog telephone ports, two analog trunk ports, and one serial port for console access
• TIM510—Avaya E1/T1 Telephony Interface Module (TIM) with one T1 or E1 trunk port
• TIM514—Avaya Analog TIM with four analog telephone ports and four analog trunk ports
• TIM521— Avaya BRI TIM with four RJ-45 ports for ISDN BRI trunk connections

The TGM550 is an H.248 media gateway that works with one or more TIMs to connect IP and legacy analog telephones and trunks over IP networks. The telephony services on the TGM550 are controlled by a Media Gateway Controller (MGC)—an Avaya media server running Avaya Communication Manager (CM) call processing software. The TGM550 is managed by an MGC located at headquarters or in a branch office. When the primary MGC is located at a remote location, the TGM550 uses standard local survivability (SLS) for partial MGC backup in the event that the connection to the primary MGC is lost.

Note: Before installing Avaya VoIP modules on a Services Router, make sure the router is running JUNOS Release 8.2. If you plan to downgrade the router to JUNOS 8.1 or earlier, remove the VoIP modules before you downgrade.

User Interface and Configuration

J-Web Quick Configuration support for static ARP addresses on Ethernet interfaces—Support for configuring static ARP addresses on Gigabit Ethernet and Fast Ethernet interfaces has been extended to the Quick Configuration pages on the J-Web interface. You can now configure static ARP addresses using the Interfaces Quick Configuration page.