Manual ZyXEL VMG3625-T50A (page 307 of 434) (English)

796875

307

Zoom out

Zoom in

1/434

Chapter 23 Voice

VMG/XMG Series User’s Guide

307

Use DHCP

Option 120 First

Select this to enable the SIP server via DHCP option 120.

RTP Port Range

Start Port

End Port

Enter the listening port number(s) for RTP traffic, if your VoIP service provider gave you this

information. Otherwise, keep the default values.

To enter one port number, enter the port number in the Start Port and End Port fields.

To enter a range of ports,

• enter the port number at the beginning of the range in the Start Port field.

• enter the port number at the end of the range in the End Port field.

SRTP Support

SRTP Support When you make a VoIP call using SIP, the Real-time Transport Protocol (RTP) is used to handle

voice data transfer. The Secure Real-time Transport Protocol (SRTP) is a security profile of RTP. It is

designed to provide encryption and authentication for the RTP data in both unicast and

multicast applications.

The Zyxel Device supports encryption using AES with a 128-bit key. To protect data integrity, SRTP

uses a Hash-based Message Authentication Code (HMAC) calculation with Secure Hash

Algorithm (SHA)-1 to authenticate data. HMAC SHA-1 produces a 80 or 32-bit authentication tag

that is appended to the packet.

Both the caller and callee should use the same algorithms to establish an SRTP session.

Crypto Suite Select the encryption and authentication algorithm set used by the Zyxel Device to set up an

SRTP media session with the peer device.

Select AES_CM_128_HMAC_SHA1_80 or AES_CM_128_HMAC_SHA1_32 to enable both data

encryption and authentication for voice data.

Select AES_CM_128_NULL to use 128-bit data encryption but disable data authentication.

Select NULL_CIPHER_HMAC_SHA1_80 to disable encryption but require authentication using the

default 80-bit tag.

DTMF Mode

DTMF Mode Control how the Zyxel Device handles the tones that your telephone makes when you push its

buttons. You should use the same mode your VoIP service provider uses.

RFC2833 - send the DTMF tones in RTP packets.

PCM - send the DTMF tones in the voice data stream. This method works best when you are using

a codec that does not use compression (like G.711). Codecs that use compression (like G.729

and G.726) can distort the tones.

SIP INFO - send the DTMF tones in SIP messages.

Transport Type

Transport Type Select the transport layer protocol UDP or TCP (usually UDP) used for SIP.

Ignore Direct IP Select Enable to have the connected CPE devices accept SIP requests only from the SIP proxy/

FAX Option This field controls how the Zyxel Device handles fax messages.

G711 Fax

Passthrough

Select this if the Zyxel Device should use G.711 to send fax messages. You have to also select

which operating codec (G.711Mulaw or G.711Alaw) to use for encoding/decoding FAX data.

The peer devices must use the same settings.

T38 Fax Relay Select this if the Zyxel Device should send fax messages as UDP or TCP/IP packets through IP

networks. This provides better quality, but it may have inter-operability problems. The peer

devices must also use T.38.

QoS Tag

Table 123 VoIP > SIP > SIP Service Provider > Add new provider/Edit (continued)

LABEL DESCRIPTION

Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

Forumrules

To achieve meaningful questions, we apply the following rules:

First, read the manual;
Check if your question has been asked previously;
Try to ask your question as clearly as possible;
Did you already try to solve the problem? Please mention this;
Is your problem solved by a visitor then let him/her know in this forum;
To give a response to a question or answer, do not use this form but click on the button 'reply to this question';
Your question will be posted here and emailed to our subscribers. Therefore, avoid filling in personal details.

new questions and answers
new manuals

You will receive an email to register for one or both of the options.

Get your user manual by e-mail

Enter your email address to receive the manual of ZyXEL VMG3625-T50A in the language / languages: English as an attachment in your email.

The manual is 13.81 mb in size.

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.

Info

ZyXEL VMG3625-T50A Manual

Product: