Hi thanks for your previous responses it was helpful ,so i wanna know if it's possible with CME to group together some PSTN lines, let me explain; as example i have 4 PSTN's numbers or line each of them are connected to my FXO card and i want to setup my router with a dial by extension just one number like 9 and when i press the 9 button it will look after the available line so if the line 216712222 was busy it will check for the other line 216713333 on the other FXO port .
The problem with using multiple dial-peer is that you need to add one dial-peer for each line.
Instead using trunkgroup, the configuration is simpler having a single dial-peer, plus you have certain advantages, like the possibility of defining how the trunkgroup is used, easier to add translation that works for all the lines, etc.
Hey thanks for you advise and by the way i'm looking to configure with CME authorization for the IP phone i mean i only authorize the ephone 2 to dial by extension only to pass through voice port 0/0/3 and for a second one just the port 0/0/2 so is that possible with trunkgroup?
To tie a a port (actual a dial-peer) to an ephone-dn, use the command "trunk XX" under ephone DN. Thank will make so that once ephoone goes off-hook, or press a line button, the number XX will be dialed.
Use that number XX as destination-pattern for a pots DP, with a specific port, so that all calls from that ephone-dn will use that port only.
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