Questions tagged [voip]

For questions about Voice over Internet Protocol (VoIP) which encompasses various technologies (methods, functions, and encapsulations) for encoding and delivering audio on a network using IP.

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130 views

Firmware of Cisco Phone

i want to configure IP phone Cisco DX650 with Sip.Anyone have idea about it how i can upload firmware of sip feature
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2answers
3k views

Why does yealink ip phone is not getting ip address from voice vlan?

I have configured separate vlan for voip and connected interface to it (as shown below). But the phone is not getting ip address automatically. switch- cisco 2960-x phone- yealink I had tried: (on ...
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1answer
358 views

How to set up VoIP inside local network without a VoIP server?

I have a task to set up VoIP inside a small network (~20 Cisco IP Phone 303). Only for calls inside the local network. I have no previous experience with VoIP and I want to do everything in the most ...
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1answer
1k views

Bandwidth regulation without QoS and VLAN [closed]

Does anyone know any possibility to do Bandwidth reservation or something equal to it. Mainly to give VoIP and IPTV Bandwidth before the Internet when there is no possibility to use QoS and VLAN. It ...
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1answer
397 views

Is it possible for ISPs to block part of VPN traffic, like UDP traffic only [closed]

My Question isn't about any carrier or ISP, as it might sound. It's about the technical aspect of internet censorship and needs networking experts to help. As you may know, some countries are blocking ...
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2answers
795 views

Convert encrypted SRTP to RTP for private network [closed]

Let's say that Alice would like to make SIP call to Bob. Alice initiates the call using her mobile device over a cellular network. On the other hand, Bob sits in a local network of an organisation. ...
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1answer
113 views

Is wireless network sutabile for VoIP services? [closed]

We are moving our HQ to a new building, I am responsible for designing the network and the data center, I was thinking to make it all wireless, but what about the voice services, can we get a good ...
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0answers
14 views

Configure VOIP in Packet Tracer 7 in hierarchical network 3-2-1

Hi, I have this tipology, and I want configure the VOIP of host 192.168.0.6 So, first. This network has VTP and two vlans: vlan 10 HOSTS vlan 150 VOIP in the switches the uplink is mode trunk ...
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0answers
13 views

Can I configure Voice VLAN on Huawei switches in access port mode?

The official documentation describes hybrid mode, but I see that in access mode, commands for configuring Voice VLAN are also available. Can I still configure Voice VLAN in access mode, has anyone ...
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0answers
19 views

Don't play music on hold for conferences

At my workplace we use Cisco video phones, CUCM, VCS, and MCU for conferences. Recently we have had some embarrassing situations where someone puts the conference on hold and everyone has to talk over ...
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1answer
638 views

Using DTMF signals of a VoIP gateway when interacting with an analog ministation (PBX)

There is such a configuration: Internet ===> [WAN port] Grandstream HT812 with hosted PBX users [FXS ports] ===> analog ministation Panasonic ===> analog telephone sets Situation: When a caller ...
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1answer
757 views

HP V1910 ProCurve Voice VLAN auto mode possible with LLDP and no OUI mask?

On a ProCurve V1910 I have configured Voice VLAN as follows in network settings using the Web UI: LLDP -> Global Setup -> LLDP Enable -> Set Enable VLAN -> Modify Port -> Select ports -> Set Link ...
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0answers
5k views

RTP Port Number

Hi, In the screenshot UDP Source Port for RTP is 8000 and Destination Port is 40376. Standard port Numbers for RTP are 16384-32767. Even if we change the standard port range, should it not be min. ...
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1answer
141 views

Auto-Attendant on Cisco CUC

I'm trying to apply an auto-attendant on a CUC, where the voice message will be just played for one time and stops, and if the caller didn't dial anything the call would hangup after 10 sec. I know ...
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1answer
164 views

How many headers are attached to voice data when we use VoIP services? [closed]

How many headers are attached to voice data when we use VoIP services? What I understand is, the maximum number of headers that can be attached to voice data is 4. For example, Layer-2 would add a ...
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1answer
108 views

Toshiba Strata CIX Calls From 'cisco' [closed]

We have a Toshiba Strata VOIP phone system. Getting bombarded with calls from 'cisco'. Answering the call immediately hangs up. Happening every 3-4 seconds. Not sure if they are originating from ...

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