Cisco 3522 BRI - Manual (Page 38)

5-2
Installation and Upgrade Guide for Cisco Unified Videoconferencing 3522 BRI Gateway and 3527 PRI Gateway Releases 5.6 and 5.7
OL-17010-01
Chapter 5 Technical Specifications
Rear panel (Cisco Unified
Videoconferencing 3527 PRI Gateway) • 1 x ISDN E1/T1 PRI port:
– T1 mode
Channels: 23B + 1D
Clock rate: 1.544 Mbps
Framing: ESF or D4
Encoding: B8ZS or AMI
Line impedance: 100
Ω
– E1 mode
Channels: 30B + 1D
Clock rate: 2.048 Mbps
Framing: G.704 with CRC4
Encoding: HDB3 or AMI
Line impedance: 120
Ω
Rear panel (Cisco Unified
Videoconferencing 3522 BRI Gateway) • 4 x ISDN BRI ports
Chipset • PowerPC MPC755 32-bit RISC microprocessor running at 400MHz or
more
• MPC8260 secondary microprocessor running at 200/133MHz or more
Operating System • RTOS, VxWorks 5.4
Memory • 32 MB on-board flash memory for field upgrades, supports up to 64 MB
• 1 MB L-2 Cache at 200 MHz or more
• 128 MB SDRAM, supports up to 256 MB
Failsafe • Watchdog timer built in
Power Supply • Input 100-240VAC autoswitched
• Output + 3.3VDC, + 5VDC, + 12VDC
• Maximum power load 150W
Table 5-1 Cisco Unified Videoconferencing 3500 Gateway Unit Technical Specifications (continued)