In business, every call should be clear, direct, and easy from the start. That’s exactly what our phone systems in Alamo Heights are built to do.
About Us
Every business in Alamo Heights runs differently. That’s why each installation starts with a real conversation. We walk through your team’s call flow and match the right phone and features to each role. Whether it’s a busy café near Broadway or a quiet legal office on Austin Highway, we fine-tune the setup to fit what you need.
Our Products
TOP SELLER!
Our Value
You need phones that work and people who pick up when they don’t. Our Alamo Heights team is available 24/7 and acts fast when you need help. We’re not just a vendor. We’re the ones who answer when you call.
Work doesn’t stop when you leave the office. With our mobile app, your calls stay with you on Wi-Fi, LTE, or 4G. Stay connected to your business line, even when you’re away from Alamo Heights.
Setup, support, updates, and long-distance are all part of the plan. No hidden fees. No added hardware costs. Just one simple monthly rate that keeps things easy.
At Absolute VOICE managed phone systems, we’ve created a managed phone solution that consolidates individual expenses, eliminates surprise fees, and reduces your monthly spending.
© Copyright 2025 AbsoluteVOICE.net | Designed By: Key Concepts Marketing
Especially designed for busy executives and professionals, Yealink SIP-T57W is an easy-to-use Prime Business Phone with an adjustable 7-inch multi-point touch screen that you can not only easily and flexibly find the comfortable viewing angle according to the personal and environmental needs, but also get a rich visual presentation and easy navigation with just one-touch. With the built-in Blue- tooth 4.2 and the built-in dual band 2.4G/5G Wi-Fi, the SIP-T57W IP Phone ensures you to keep up with the modern wireless technology and take the first chance in the future wireless age. Its built-in USB 2.0 port allows for USB recording or a direct wired/wireless USB headset or up to three Yealink EXP50 expansion modules connection. Benefitting from these features, the Yealink SIP-T57W is a powerful and expandable office phone that delivers optimum desktop efficient and productivity.
• HD voice: HD handset, HD speaker
• Hearing aid compatible (HAC) handset
• Acoustic Shield
• Smart Noise Filtering
• Audio codec: Opus, G.722, PCMU (G.711A), PCMA
(G.711μ), G.729, G.729A, G.729B, G.729AB, G.726,
G.723.1, iLBC
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC
• 16 VoIP accounts
• One-touch speed dial, hotline
• Call forward, call waiting, call transfer
• Mute, DND, call hold, redial, call return, auto answer
• Group listening, SMS, emergency call
• 10-way conferencing
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Set date time manually or automatically
• Dial plan, XML Browser, Action URL/URI
• RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
• Built-in dual band Wi-Fi:
– Network standard: IEEE802.11a/b/g/n
– Transmission rate: Up to 433Mbps (dynamic) – Frequency range: 2.4GHz/5.0GHz
• Built-in Bluetooth for:
– Bluetooth headset,
– Mobile contacts synchronization
– Bluetooth call
– Simultaneous connection of one headset and one mobile phone
• USB port (2.0 compliant) for:
– Wired/wireless USB headset
– USB call recording through USB flash drive
– Color-screen expansion modules EXP50 (up to 3) – Wireless Headset Adapter EHS40
• USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone, USB connectivity to Yealink UH36 headset: – Basic functions: Answer / end, call mute
– Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple calls control
• Content Sharing (via Yealink VCD)
• Enhanced DSS key
• Local phonebook up to 1000 entries
• Black list
• XML/LDAP remote phonebook
• Smart dialing
• Phonebook search/import/export
• Call history: dialed/received/missed/forwarded
• Up to 4 DECT cordless handsets
• Up to 4 concurrent calls
• Support Yealink W52H/W53H/W56H/DD Phone/CP930W
• Slave Handset for Master Deskset
• Busy Lamp Field (BLF), Bridged Line Apperance (BLA)
• Anonymous call, anonymous call rejection
• Hot-desking, voice mail
• Flexible seating, Executive and Assistant
• Call park, call pickup
• Centralized call recording, call recording
• 7″ 800 x 480 capacitive adjustable touch screen
• LED for call and message waiting indication
• Dual-color (red or green) illuminated LEDs for line status
information
• Wallpaper
• Intuitive user interface with icons and soft keys
• Multilingual user interface
• Caller ID with name, number and photo
• Screensaver
• Power saving
• 29 one-touch DSS keys
• 7 feature keys: hold, transfer, message, headset, mute,
redial, speakerphone
• Volume control keys
• Illuminated mute/headset/hands-free speakerphone key
• Dual-port Gigabit Ethernet
• Power over Ethernet (IEEE 802.3af)
• 1 x USB port (2.0 compliant)
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port
• Configuration: browser/phone/auto-provision
• Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
• Auto-provision with PnP
• Broadsoft device management
• Zero-sp-touch, TR-069
• Phone lock for personal privacy protection
• Reset to factory, reboot
• Package tracing export, system log
• SIP v1 (RFC2543), v2 (RFC3261)
• Call server redundancy supported
• NAT traversal: STUN mode
• Proxy mode and peer-to-peer SIP link mode
• IP assignment: static/DHCP
• HTTP/HTTPS web server
• Time and date synchronization using SNTP
• UDP/TCP/DNS-SRV(RFC 3263)
• QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
• SRTP for voice
• Transport Layer Security (TLS 1.3)
• HTTPS certificate manager
• AES encryption for configuration file (AES256)
• Digest authentication using MD5/MD5-sess
• OpenVPN, IEEE802.1X, L2TP VPN
• IPv6, LLDP/CDP/DHCP VLAN, ICE
• WPA2/WPA3
• Secure boot
• GARP (Generic Attribute Registration Protocol)
• Color: Classic Grey
• Wall mountable (optional)
• External Yealink AC adapter (optional):
AC 100~240V input and DC 5V/2A output
• USB output currency: 5V 500mA
• Power consumption (PSU): 3.2W-6.3W
• Power consumption (PoE): 4.0W-7.8W
• Dimension (W*D*H*T):
259.4mm*220mm*211mm*44.5mm
• Operating humidity: 10~95%
• Operating temperature: -10~50°C (+14~122°F)
Package content:
Yealink SIP-T57W IP phone
Handset with handset cord
Ethernet Cable
Stand
Quick Start Guide
Power Adapter (Optional)
Qty/CTN: 5 PCS
N.W/CTN: 8.86 kg
G.W/CTN: 9.79 kg
Giftbox size: 324 mm*293 mm*128 mm Carton Meas: 680 mm* 303 mm*342 mm
Especially designed for busy executives and professionals, Yealink SIP-T54W is an easy-to-use Prime Business Phone with an adjustable 4.3-inch color LCD screen that you can easily and flexibly find the comfortable viewing angle according to the personal and environmental needs. With the built-in Bluetooth 4.2 and the built-in dual band 2.4G/5G Wi-Fi, the SIP-T54W IP Phone ensures you to keep up with the modern wireless technology and take the first chance in the future wireless age. Its built-in USB 2.0 port allows for USB recording or a direct wired/wireless USB headset or up to three Yealink EXP50 expansion modules connection. Benefitting from these features, the Yealink SIP-T54W is a powerful and expandable office phone that delivers optimum desktop efficient and productivity.
• HD voice: HD handset, HD speaker
• Hearing aid compatible (HAC) handset
• Acoustic Shield
• Smart Noise Filtering
• Audio codec: Opus, G.722, PCMU (G.711A), PCMA
(G.711μ), G.729, G.729A, G.729B, G.729AB, G.726,
G.723.1, iLBC
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC
• 16 VoIP accounts
• Call hold, call forward, call waiting, call transfer
• One-touch speed dial, hotline, mute, DND
• Group listening, SMS, emergency call
• Redial, call return, auto answer
• 10-way conferencing
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Set date time manually or automatically
• Dial plan, XML Browser, Action URL/URI
• RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
• Built-in dual band Wi-Fi:
– Network standard: IEEE802.11a/b/g/n
– Transmission rate: Up to 433Mbps (dynamic) – Frequency range: 2.4GHz/5.0GHz
• Built-in Bluetooth for:
– Bluetooth headset,
– Mobile contacts synchronization
– Bluetooth call
– Simultaneous connection of one headset and one mobile phone
• USB port (2.0 compliant) for:
– Wired/wireless USB headset
– USB call recording through USB flash drive
– Color-screen expansion modules EXP50 (up to 3) – Wireless Headset Adapter EHS40
• USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone, USB connectivity to Yealink UH36 headset: – Basic functions: Answer / end, call mute
– Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple calls control
• Content Sharing (via Yealink VCD)
• Enhanced DSS key
• Local phonebook up to 1000 entries
• Black list
• XML/LDAP remote phonebook
• Smart dialing
• Phonebook search/import/export
• Call history: dialed/received/missed/forwarded
• Up to 4 DECT cordless handsets
• Up to 4 concurrent calls
• Support Yealink W52H/W53H/W56H/DD Phone/CP930W
• Slave Handset for Master Deskset
• Busy Lamp Field (BLF)
• Bridged Line Apperance (BLA)
• Anonymous call, anonymous call rejection
• Hot-desking, voice mail
• Flexible seating
• Executive and Assistant
• Call park, call pickup
• Centralized call recording, call recording
• 4.3″ 480 x 272-pixel color display with backlight
• 16 bit depth color
• LED for call and message waiting indication
• Dual-color (red or green) illuminated LEDs for line status
information
• Wallpaper
• Intuitive user interface with icons and soft keys
• Multilingual user interface
• Caller ID with name and number
• Screensaver
• Power saving
• 10 line keys with LED
• 10 line keys can be programmed up to 27 various features
(3-page view)
• 7 features keys: message, headset, hold, mute, transfer,
redial, hands-free speakerphone
• 4 context-sensitive “soft” keys
• 6 navigation keys
• Volume control keys
• Illuminated mute/headset/hands-free speakerphone key
• Dual-port Gigabit Ethernet
• Power over Ethernet (IEEE 802.3af), class 3
• 1 x USB port (2.0 compliant)
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port
• Configuration: browser/phone/auto-provision
• Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
• Auto-provision with PnP
• Broadsoft device management
• Zero-sp-touch, TR-069
• Phone lock for personal privacy protection
• Reset to factory, reboot
• Package tracing export, system log
• SIP v1 (RFC2543), v2 (RFC3261)
• Call server redundancy supported
• NAT traversal: STUN mode
• Proxy mode and peer-to-peer SIP link mode
• IP assignment: static/DHCP
• HTTP/HTTPS web server
• Time and date synchronization using SNTP
• UDP/TCP/DNS-SRV(RFC 3263)
• QoS: 802.1p/Q tagging (VLAN), Layer 3 ToS DSCP
• SRTP for voice
• Transport Layer Security (TLS 1.3)
• HTTPS certificate manager
• AES encryption for configuration file (AES256)
• Digest authentication using MD5/MD5-sess
• OpenVPN, IEEE802.1X, L2TP VPN
• IPv6, LLDP/CDP/DHCP VLAN, ICE
> WPA2/WPA3
> Secure boot
> GARP (Generic Attribute Registration Protocol)
• Color: Classic Grey
• Wall mountable (optional)
• External Yealink AC adapter (optional):
AC 100~240V input and DC 5V/2A output
• USB output currency: 5V 500mA
• Power consumption (PSU): 1.7W-4.3W
• Power consumption (PoE): 2.2W-5.5W
• Dimension (W*D*H*T):
233mm*222.6mm*186.1mm*41.7mm
• Operating humidity: 10~95%
• Operating temperature: -10~50°C (+14~122°F)
• Package content:
– Yealink SIP-T54W IP phone – Handset with handset cord – Ethernet Cable
– Stand
– Quick Start Guide
– Power Adapter (Optional)
• Qty/CTN: 5 PCS
• N.W/CTN: 6.3 kg
• G.W/CTN: 6.8 kg
• Giftbox size: 259 mm*243 mm*103 mm
• Carton Meas: 538 mm*250 mm*265 mm
Especially designed for busy executives and professionals, SIP-T53W is an easy-to-use Prime Business Phone with an adjustable 3.7-inch graphical LCD that you can easily and flexibly find the comfortable viewing angle according to the personal and environmental needs. With the built-in Bluetooth 4.2 and the built-in dual band 2.4G/5G Wi-Fi, the SIP-T53W IP Phone ensures you to keep up with the modern wireless technology and take the first chance in the future wireless age. Its built-in USB 2.0 port allows for USB recording or a direct wired/wireless USB headset or up to three Yealink EXP50 expansion modules connection. Benefitting from these features, the SIP-T53W is a powerful and expandable office phone that delivers optimum desktop efficient and productivity.
• HD voice: HD handset, HD speaker
• Hearing aid compatible (HAC) handset
• Acoustic Shield
• Smart Noise Filtering
• Audio codec: Opus, G.722, PCMU (G.711A), PCMA
(G.711μ), G.729, G.729A, G.729B, G.729AB, G.726,
G.723.1, iLBC
• DTMF: In-band, Out-of-band (RFC 2833) and SIP INFO
• Full-duplex hands-free speakerphone with AEC
• VAD, CNG, AEC, PLC, AJB, AGC
• 12 VoIP accounts
• Call hold, mute, DND, redial, call return, auto answer
• One-touch speed dial, call forward, call waiting, call transfer
• Group listening, hotline, SMS, emergency call
• 5-way conferencing
• Direct IP call without SIP proxy
• Ring tone selection/import/delete
• Set date time manually or automatically
• Dial plan, XML Browser, Action URL/URI
• RTCP-XR (RFC3611), VQ-RTCPXR (RFC6035)
• Built-in dual band Wi-Fi:
– Network standard: IEEE802.11a/b/g/n
– Transmission rate: Up to 433Mbps (dynamic) – Frequency range: 2.4GHz/5.0GHz
• Built-in Bluetooth 4.2 for: – Bluetooth headsets
– Contact synchronization – Bluetooth call
– Simultaneous connection of one headset and one
mobile phone
• USB port (2.0 compliant) for:
– Wired/wireless USB headset
– USB call recording through USB flash drive – Expansion module EXP50 (up to 3)
– Wireless Headset Adapter EHS40
• USB/Bluetooth connectivity to Yealink CP900/CP700 speakerphone, USB connectivity to Yealink UH36 headset: – Basic functions: Answer / end, call mute
– Enhanced function: audio optimization, redial, call hold, volume synchronization, multiple calls control
• Content Sharing (via Yealink VCD)
• Enhanced DSS key
• Local phonebook up to 1000 entries
• Black list
• XML/LDAP remote phonebook
• Smart dialing
• Phonebook search/import/export
• Call history: dialed/received/missed/forwarded
• Up to 4 DECT cordless handsets
• Up to 4 concurrent calls
• Support Yealink W52H/W53H/W56H/DD Phone/CP930W
• Slave Handset for Master Deskset
• Busy Lamp Field (BLF), Bridged Line Apperance (BLA)
• Anonymous call, anonymous call rejection
• Hot-desking, voice mail
• Flexible seating, Executive and Assistant
• Call park, call pickup
• Centralized call recording, call recording
• 3.7″ 360×160-pixel graphical LCD with backlight
• LED for call and message waiting indication
• Dual-color (red or green) illuminated LEDs for line status
• Intuitive user interface with icons and soft keys
• Multilingual user interface
• Caller ID with name and number
• Power saving
• 8 line keys with LED
• 8 line keys can be programmed up to 21 various features
(3-page view)
• 5 features keys:
mute, headset, message, redial, hands-free speakerphone
• 4 context-sensitive “soft” keys
• 6 navigation keys
• Volume control keys
• Illuminated mute/headset/hands-free speakerphone key
• Dual-port Gigabit Ethernet
• Power over Ethernet (IEEE 802.3af), class 2
• 1 x USB port (2.0 compliant)
• 1 x RJ9 (4P4C) handset port
• 1 x RJ9 (4P4C) headset port
• Configuration: browser/phone/auto-provision
• Auto provision via FTP/TFTP/HTTP/HTTPS for mass deploy
• Auto-provision with PnP
• Broadsoft device management
• Zero-sp-touch, TR-069
• Phone lock for personal privacy protection
• Reset to factory, reboot
• Package tracing export, system log
• Color: Classic Grey
• Wall mountable (optional)
• External Yealink AC adapter (optional):
AC 100~240V input and DC 5V/1.2A output
• USB output currency: 5V 500mA
• Power consumption (PSU): 1.3W-2.3W
• Power consumption (PoE): 1.8W-3.1W
• Dimension (W*D*H*T):
212mm*210.6mm*174.5mm*41.7mm
• Operating humidity: 10~95%
• Operating temperature: -10~50°C (+14~122°F)
• Color: Classic Grey
• Wall mountable (optional)
• External Yealink AC adapter (optional):
AC 100~240V input and DC 5V/2A output
• USB output currency: 5V 500mA
• Power consumption (PSU): 1.7W-4.3W
• Power consumption (PoE): 2.2W-5.5W
• Dimension (W*D*H*T):
233mm*222.6mm*186.1mm*41.7mm
• Operating humidity: 10~95%
• Operating temperature: -10~50°C (+14~122°F)
Yealink SIP-T53W IP phone
Handset with handset cord
Ethernet Cable
Stand
Quick Start Guide
Power Adapter (Optional)
Qty/CTN: 5 PCS
N.W/CTN: 5.8 kg
G.W/CTN: 6.3 kg
Giftbox size: 238mm*237mm*103mm Carton Meas: 538mm*244mm*250mm