Datasheet

Data Sheet
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International
Telecommunications Union (ITU)
standard voice codecs
Voice algorithms
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G.711 (a-law and μ-law)
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G.726 (16/24/32/40 kbps)
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G.729 AB
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G.723.1 (6.3 kbps, 5.3 kbps)
Telephony interface
signaling support
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Ring voltage: 40 to 90 Vpk
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Ring frequency: 20 to 25 Hz
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Ring waveform: trapezoidal with 1.2 to 1.6 crest factor
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Maximum ringer load: 3 ringer equivalence numbers (RENs)
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On-hook/off-hook characteristics:
◦ On-hook voltage (tip/ring): -46 to -56V
◦ Off-hook current: 18 to 20 mA
◦ Terminating impedance: 600 ohm resistive
◦ 270 ohm + 750 ohm//150 nF complex impedance
◦ Frequency response: 300 to 3400 Hz
Voice features
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Call forwarding: no answer/busy/unconditional
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SIP TLS
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Call transfer
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Call waiting/hold/retrieval
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Three-way conferencing
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Caller ID number and name (primary line and on call waiting)
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Caller ID block (prevents sending out the caller ID)
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Anonymous call blocking
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Distinctive ringing
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Do not disturb setting
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Repeat dialing on busy
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Call return
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Emergency call support
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Dial plan
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Speed dial
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Auto-attendant
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Multiroom meet-me conference
Voice port interfaces Support FXS and FXO, FXO port on SRP 520 models is for lifeline support only
Fax and modem
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Fax and modem pass-through: Allows fax and modem traffic to pass through a voice port.
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Fax relay: Provides a more robust protocol for fax transmission over packet networks. Also supports the
T.37 and T.38 fax protocols.
Table 4. Wireless Features of the Cisco SRP 500 Series
Feature Description
WLAN hardware
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Wi-Fi 802.11b/g/n
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WPA and WPA2
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Wi-Fi Multimedia (WMM)
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Wi-Fi 802.11n draft v2.0 certified
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Single captive antenna on SRP 520 models, dual TNC antennas on SRP 540 models
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Default antenna gain: 2.2 dBi
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WPS button associated with configurable SSID
WLAN security features
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802.11i
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WPA and Advanced Encryption Standard (AES) (WPA2 - Personal and Enterprise modes)
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Static and dynamic WEP
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Temporal Key Integrity Protocol/Simple Security Network (TKIP/SSN) encryption
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MAC authentication/filter
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Configurable limit on the number of wireless clients (up to 25 clients)
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Configurable RADIUS accounting for wireless clients (up to 25 clients)
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Pre-Shared Keys (PSK)
SSIDs 4